That's really a very bad idea which might receive some negative criticism. We don't need another Tarkin/Leia type of recreation CG in these movies. Moreover, Fiege and Russo's have confirmed that Stan would appear in at least 3 more MCU films of 2019. Weather he being a part of Guardians of the Galaxy 3 is still unknown and that might end the current Phase 3.
P.S Should this topic be really in Collectibles section? May be Serious Discussion would fit.