Add option to make delegations for fixed period length

[bitcoiners]

This issue is related to
#1501
and
#1499
Currently SP delegation can be recalled at any moment and does not have a set length, which limits its use.
In order to enable use of delegated SP as collateral on loans or payment for products and services, we need an option to delegate for a fixed period of time, with no early recall possibility.

[mvandeberg]

I am not understanding the benefits from using SP as collateral as part of a delegation. There is no permanent exchange of property. The whole point of collateral is that the lender has some property they can walk away with if they aren't repaid. With delegations, that is not possible. The only property that changes hands is the rewards from the SP. If a lender wants to offset their risk, then they are incentivized to mine the reward pool to do so.

Steem already has on chain escrow, which is a much better method for managing collateral or pending payments.

[bitcoiners]

Correct, collateral should be handled by escrow.
However, accepting SP delegation as payment requires an option to set delegation length.
We intend to offer products and services that could be payed for with SP leases (1 month, 3 months, ..)

[bitcoiners]

Will this issue be included in upcoming fork? Will it be added to roadmap?!
This is a very needed feature, required for securitization of Steem Power!
Why is this feature request being ignored?
#roadmap2018

[yashwanth2804]

can we provide an option for delegation, such that sender can take back his delegated sp before certain time .after that he has no control.that will be given to reciver .
thanks .educate menif i am missing anything