There may not be a need for this feature as there are 2 types of delegation (cf. Delegation doc )
In the case of the lightweight delegation, the delegation is used only for generating block, so I assume you can still vote by yourself aside as well.
In the case of a heavyweight delegation, you delegate basically everything to one entity (MPC, minting and voting). If you just want to stack for minting, you can just do a lightweight delegation in this case.
One thing I don’t really get:
Heavyweight delegation is using stake threshold T. It means that stakeholder has to posses not less than T in order to participate in heavyweight delegation.
Does that mean that in order to delegate my stack for example, I need to be above T or if I want to delegate my stack, I can do it only to someone who has more than T ?