Should a NonTransfer proxy be able to set_accept_ownership of an asset?

[gilescope]

On statemint, should a ProxyType::NonTransfer be able to set_accept_ownership? This would allow a non-transfer proxy (a proxy that could not send assets to other accounts) to opt into receiving certain assets within that account. (The set_accept_ownership is there in general to prevent people drive by inserting things into your account without your permission)

This is currently barred, but I think this should probably be allowed.

[gilescope]

@NachoPal pointed out that there's a fair few methods that are currently not proxied: #1189 (comment)

So maybe we should also consider making some of those methods available to proxies also.

[xlc]

We should really be doing opt-in instead of opt-out.
A missed opt-in means people won’t be able to something they should be able to do but a missed opt-out means people can do something they shouldn’t be able to do, which is just another level of issue.