Warning: SPOILERS for Star Trek: Picard Season 3 Finale – "The Last Generation"Star Trek: Picard may have come to an end, but the potential adventures of Starfleet in the 25th century could still continue in Star Trek: Legacy. Terry Matalas, who was the showrunner for Picard season 3, has made it clear he'd love to keep telling stories in this particular corner of the Star Trek universe. Critical and fan reception to Picard season 3 was strong, so it makes sense that Matalas could get another crack at the whip.
The end of Star Trek: Picard pretty perfectly sets up a spinoff series, with Captain Seven Of Nine (Jeri Ryan) taking her place as the new commanding officer of the USS Enterprise-G. There's also ample opportunity for members of the Star Trek: The Next Generation cast to have recurring roles on the series if they so choose. All that said, there's no guarantee that Star Trek: Legacy is going to happen, certainly not anytime soon, for several reasons.