The reason it would be kind of desireable for me is that I am often flicking back and forwards between Premiere and AEFX (and P.S) during the course of a day. (same project)

I do not feel that my system memory resources are fully released sometimes and detect a slowing in Premiere so I shut out of AEFX which fixes it immediately. It would be nice to have AEFX relaunch in the same project (but no big deal really)

Whats a couple more clicks out of many clicks every day?