If you want to see more installments in the SEGA AGES line, you'll have to support what's out there right now. A Game.Watch interview with SEGA's Yosuke Okunari reveals that more installments in both the Puyo Puyo and Sonic franchises could get the SEGA AGES treatment, but it all depends on how the current titles sell. The interviewer brings up the idea of SEGA AGES installments for Sonic 3, Sonic & Knuckles, and the arcade game SegaSonic the Hedgehog. You can see Okunari's response below.
“When we began work on SEGA Ages for the Nintendo Switch, the amount of titles in development were limited, so we decided on a lineup that consisted of the first two entries in the Puyo Puyo and Sonic series. If this collection of SEGA Ages titles is successful, then I’d say we’d really like to consider releasing more in those series. The arcade game, SegaSonic the Hedgehog, has never been ported before…”