docs(importing.md): emphasize new operator imports

docs_app/content/guide/importing.md

@@ -3,39 +3,53 @@
 There are different ways you can {@link guide/installation install} RxJS. Using/importing RxJS depends on
 the used RxJS version, but also depends on the used installation method.
 
-# Export sites
+[Pipeable operators](https://v6.rxjs.dev/guide/v6/pipeable-operators) were introduced in RxJS version
+5.5. This enabled all operators to be exported from a single place. This new export site was introduced
+with RxJS version 6 where all pipeable operators could have been imported from `'rxjs/operators'`. For
+example, `import { map } from 'rxjs/operators'`.
 
-RxJS v7 exports 6 different locations out of which you can import what you need. Those are:
+# New in RxJS v7.2.0
+
+<span class="informal">**With RxJS v7.2.0, most operators have been moved to `{@link api#index 'rxjs'}`
+export site. This means that the preferred way to import operators is from `'rxjs'`, while
+`'rxjs/operators'` export site has been deprecated.**</span>
 
-- `{@link api#index 'rxjs'}` (for example: `import { of } from 'rxjs'`)
-- `{@link api#operators 'rxjs/operators'}` (for example: `import { map } from 'rxjs/operators'`)
-- `{@link api#ajax 'rxjs/ajax'}` (for example: `import { ajax } from 'rxjs/ajax'`)
-- `{@link api#fetch 'rxjs/fetch'}` (for example: `import { fromFetch } from 'rxjs/fetch'`)
-- `{@link api#webSocket 'rxjs/webSocket'}` (for example: `import { webSocket } from 'rxjs/webSocket'`)
-- `{@link api#testing 'rxjs/testing'}` (for example: `import { TestScheduler } from 'rxjs/testing'`)
+For example, instead of using:
 
-A new way of importing {@link guide/operators operators} is introduced with RxJS v7.2.0.
+```ts
+import { map } from 'rxjs/operators';
+```
 
-# What's changed in RxJS v7.2.0?
+**the preferred way** is to use:
 
-[Pipeable operators](https://v6.rxjs.dev/guide/v6/pipeable-operators) were introduced in RxJS version
-5.5. This enabled all operators to be exported from a single place. This new export site was introduced
-with RxJS version 6 where all pipeable operators could have been imported from `'rxjs/operators'`. For
-example, `import { map } from 'rxjs/operators'`.
+```ts
+import { map } from 'rxjs';
+```
+
+Although the old way of importing operators is still active, it will be removed in one of the next major
+versions.
+
+Click {@link #how-to-migrate here to see} how to migrate.
 
-With RxJS v7.2.0, most operators have been moved to `{@link api#index 'rxjs'}` export site. This means
-that preferred way to import operators is from `'rxjs'`.
+# Export sites
+
+RxJS v7 exports 6 different locations out of which you can import what you need. Those are:
 
-For example, instead of using: `import { map } from 'rxjs/operators'`, the preferred way is to use:
-`import { map } from 'rxjs'`. Although old way of importing operators is still active, it will soon
-become deprecated.
+- `{@link api#index 'rxjs'}` - for example: `import { of } from 'rxjs';`
+- `{@link api#operators 'rxjs/operators'}` - for example: `import { map } from 'rxjs/operators';`
+- `{@link api#ajax 'rxjs/ajax'}` - for example: `import { ajax } from 'rxjs/ajax';`
+- `{@link api#fetch 'rxjs/fetch'}` - for example: `import { fromFetch } from 'rxjs/fetch';`
+- `{@link api#webSocket 'rxjs/webSocket'}` - for example: `import { webSocket } from 'rxjs/webSocket';`
+- `{@link api#testing 'rxjs/testing'}` - for example: `import { TestScheduler } from 'rxjs/testing';`
 
-## What stayed in `'rxjs/operators'`?
+## How to migrate?
 
-Only couple of old and mostly deprecated operators have stayed in the `'rxjs/operators'`. Those
-operators are now mostly deprecated and most of them have their either static operator substitution
-or are kept as operators, but have a new name so that they are different to their static creation
-counter-part (usually ending with `With`). Those are:
+While nothing has been removed from `'rxjs/operators'`, it is strongly recommended doing the operator
+imports from `'rxjs'`. Almost all operator function exports have been moved to `'rxjs'`, but only a
+couple of old and deprecated operators have stayed in the `'rxjs/operators'`. Those operator functions
+are now mostly deprecated and most of them have their either static operator substitution or are kept as
+operators, but have a new name so that they are different to their static creation counter-part (usually
+ending with `With`). Those are:
 
 | `'rxjs/operators'` Operator                             | Replace With Static Creation Operator | Replace With New Operator Name |
 | ------------------------------------------------------- | ------------------------------------- | ------------------------------ |
@@ -47,15 +61,26 @@ counter-part (usually ending with `With`). Those are:
 | [`race`](/api/operators/race)                           | {@link race}                          | {@link raceWith}               |
 | [`zip`](/api/operators/zip)                             | {@link zip}                           | {@link zipWith}                |
 
-For example, usage of a static creation {@link merge} operator:
+For example, the old and deprecated way of using [`merge`](/api/operators/merge) from `'rxjs/operators'`
+is:
+
+```ts
+import { merge } from 'rxjs/operators';
+
+a$.pipe(merge(b$)).subscribe();
+```
+
+But this should be avoided and replaced with one of the next two examples.
+
+For example, this could be replaced by using a static creation {@link merge} function:
 
 ```ts
 import { merge } from 'rxjs';
 
 merge(a$, b$).subscribe();
 ```
 
-could be written as (using a pipeable operator):
+Or it could be written using a pipeable {@link mergeWith} operator:
 
 ```ts
 import { mergeWith } from 'rxjs';