I haven’t looked at GalenEvil’s implementation for the details, but it is absolutely going to support swappable tilesets, there will be at least one tileset we ship with the game, but based on the level of interest I’ve seen, we will likely have quite a few floating around.
This is exactly what we’ve been saying, it’s precisely the extra overhead of graphics that keep games like Day-Z from having as much content as Cataclysm. Even if they make their game as moddable as we’re planning on making DDA, the barrier to entry for simply adding an item is an item definiton as well as a skinned 3D mesh, which massively shrinks the pool of potential contributors.
Such a thing would probably need a AAA budget, and the companies throwing around that kind of money aren’t interested. An open-source team might be able to do it, but wrangling both the engineering and artistic manpower required for that kind of thing would be exceedingly difficult, and is pretty hard to bootstrap.
Personally I think an achievable goal would be a voxel-based zombie survival game, voxels are basically the ASCII of 3D. I was actually looking into this before jumping on to Cataclysm, but couldn’t find a non-Java open source voxel engine, and I’m not up to writing my own voxel engine.
Now what you’re describing is a mythical AAAA funded game. 3D destructable environments are ridiculously difficult, with our tile-based (and with Z-levels, cube-based) archatecture, I fully plan on having destructable, collapsable buildings, but doing so in a skinned 3D enviroment increases the engine and asset loads incredibly. From what I can tell this is handled currently with some mixture of hand-crafted models/textures, decals, and procedural generation, but the problem of taking an arbitrary 3D model and making it look right when partially destroyed is ridiculously difficult. (I’ve done some research on replicating the level of destructability in e.g. Xcom in a 3D space, it’s HARD).
Despite my skepticism, I do too.
Demand is the other thing, the game industry is all about PvP