With Rebellion (owners of 2000AD) trying to get film treatments of their IP* before the Marvel & DC trend ends, I’d love to see Halo Jones or Zenith, but know it’ll be RT or Robo-Hunter. Settle for Strontium Dog or Nikolai Dante or Nemesis.
(*although I think I remember reading that many options were sold by the last owners for buttons)
It’s probably worth considering how difficult it would be to adapt some 2000ad properties to film. The ones that stand the best chance of getting made are probably storeis and characters that are broadly speaking “conventional”.
Beyond Judge Dredd, Rogue Trooper and maybe Slaine, I don’t see anything that’s accessible enough to be made into a modest budget sci-fi/genre film.