To populate the community, maybe, but QuakeLive, original Q3 servers and open alternatives still have people. And what I love about them more than the idea of a remaster is that they aren’t gated by software or hardware. This possible remaster may require a W10-11 and lots of powerful hardware to show all these fancy things you, by default, disable to participate in competitive Quake.
Quake Champions (or how it’s called) is what current gen have instead, while old people don’t care having old Quake 3 Arena things running.