Another thought: firms this size usually have their own M&A-team. Obviously you could buy the IP at an offer they can't refuse (but you probably couldn't Kickstart). Might sound snarky but there doesn't seem to be a market for old IP in games, which suggests they will not take your idea serious for 'normal' market value. That might be pretty economic. Big game producers need people playing new games, not having too much fun with (better) games from the old days. The hedonistic threadmill is what makes their firm the current size. Don't distort that balance by opening up the retro market.
They would try to turn it into mobile game or such.
There were a huge number of mods you could get for it from memory. Such as additional maps/campaigns to play through.
One of the first games I played online, the community was fantastic. Never managed to level up to get my crown :-( , it was a tough game to master online.
Is it possible to acquire the game on a steam like site?