These aren't little "mod" stuff here. These are major changes that will let you get vastly more replayability.
End of quote
Depends on what you found appealing about GC to begin with. I *like* the random, open game. From my perspective, what I get for the most part from AP is improved AI and the promise of continued support at a time when base GC is about to stop being tweaked.
The new techs and buildings could be a mod. The new ships can't perfectly be recreated but like everything about this game they're just a matter of each tech advance or ship being a foo++ change anyhow. People can make approximations and even use your guy's art and ship animations (although you probably won't want to host it here for obvious reasons).
New AI players? For scenarios, yes, maybe there is something to them, but in the random game they're another foo++ change that adds minorly to the variety of any one particular game. However, since you've never really made the different AIs that distinctive (and I'm still not sure what the 'default' alignments are for the Drath and Korx are since there's nothing in-game that indicates this - I've been playing with them on random) it's just new animated art. Someone could use some Bink tools, make some short animations and replace the Altarians and rename them the Ooogledy Boogledies and, voila, you'd have the same effect for all intents and purposes.
Scenarios are an unproven element that will only show their value in the long run (and maybe will never materialise as a significant value). The metaverse is an unproven element that may never prove a thing. I'm not dissing your guy's hard work, but there were pie in the sky intentions for the initial metaverse that never materialised. There has never been anything approaching a balanced scoring system.
Now, maybe there's a lot of people out there dying to create scenarios, maybe there's hordes of people who want to play them. I was more interested in seeing a dynamic campaign along with tweaks to the base game. I got tweaks to the base game, but I also got a campaign that's barely playable on Normal difficulty and tedious to progress through - the attempt at balancing with the inverse ally/enemie AI intelligence screwed the thing up beyond recognition. Since what should have been the biggest draw for me was a let down, AP get's a solid 'eh'.