There are third-party servers, yeah, and the CAP pokémon do in fact work and iirc are just used in a CAP playtest tier on the regular Smogon/Showdown server (see also this screenshot of the error I ran into on one of the rare occasions that I was able to login and connect to my test server); it's just that when you enter the data for your own pokémon or customizations they don't actually show up, and there's currently no way to specify that you need it to look somewhere else for the images and such. Whatever you try to add is just not there, not selectable in the teambuilder or anything. Unless I messed up somehow and something else was preventing it from recognizing my invisible osgrave, idk.
(where did this Nugget Bridge place even come from btw, I'd never heard of it before and now all of a sudden everyone is linking to it and what.)
Hm, maybe. And yeah, it does kind of suck that no one seems to consider open-sourcing what they do try or letting people fork it off Github or something. There was this one guy years ago who was making a game in Sphere, and Sphere's language is literally just JavaScript; I almost wish he'd release parts of what he'd already done since the project appears to be long dead, because that would be like the perfect thing to link into a battle system ganked from Showdown. :( Although I think he might've had at least most of a battle system anyway...? Most of the information on it seems to be missing so I can't check, but even so.
I guess it wouldn't be too bad when you put it that way—I was thinking it would at least be possible to do a completely random "wild" AI, if nothing else, or maybe the trainer AI from Gen I where they were all "super-effective move go go go no I don't care if that move is agility spam it nao". Eh. I guess it would depend on how complex you wanted it to be, yeah. (That sounds cool, though! As does the FRLG hack, or whatever you end up doing with it when you get around to it. :) Will there be stairs?)
I said competitively, you're not paying attention. >| Who even bothers with sims if they're not playing competitively? I mean idk, maybe I'm wrong, and if it were advertised as casualish then maybe, but... ??? Why bother when there'd be the tower thing, etc.?