I have some plans written up for a proper Tamriel mod, but I doubt I'll be motivated to actually do it. Basically a big list of items, which can be contributed to freely. Tamriel Rebuilt's claim system, I think, makes it less likely for something to actually get finished because it separates all the assets and workload into specific teams, which can mysteriously disappear from the entire project- thus leaving a large gap. Instead, people would freely toss in any of the items into the vat o' assets, and
then once enough items for a province are compiled, a team would begin putting it all together in the world.
Currently though, I've become re-obsessed with my own game, which I've made a breakthrough for.