Unfortunately, the right hands potentially no longer exist. The current generation seems largely unable to produce good things, with few exceptions (notably Andor)
Babylon 5 demonstrated that you can keep absolutely everything else crappy (effects, costumes, heck acting and even cinematography), so long as you're good at conversations in rooms.
The Halo universe offers a lot to mine from, just like the Star Wars Universe did for Andor. It's just waiting for the chosen one writer to be allowed to do the job. Who's the J. Michael Straczynski or Tony Gilroy for the Halo universe?
In theory you can make any sci fi show about future humans and a couple other species going to war. Should be straightforward.
But getting the balance of that universe right in terms of little details is tricky: Halo has done the heavy lifting already.
Are they? I thought after the pro league failed it's transition to SC2 and the GSL ended that it mostly went to streaming platforms.
Same old story, right?
But getting the balance of technologies, motivations (e.g. jihad-dynamics), and nitty-gritty details (e.g. the splinter factions) right is the trick: it's much easier to do wrong than to do right.