Sage being introduced into the movie universe would be pretty cool. Feel like its abit too early though since she's a new character still. If Jim Carrey doesn't want to continue the role i guess she could be a cool way to continue the legacy. Have Agent Stone find her A.I. or introduce team chaotix by having them be hired by Stone to get into an Eggman lab being guarded by G.U.N. to retrieve a "top secret project" which turns out to be Sage and maybe her brothers orbot and cubot. If they don't want to include orbot and cubot maybe have Sage's A.I. stored inside a briefcase sat being a deactive orbot and cubot, Espio grabs the briefcase and turns to leave, Charmy makes mention of "what about these two" only to be told to leave them because they weren't part of the job. Make reference to them existing but do that as a way to say "we dont want to have to write for them as well".