Assuming there will be few people actually performing these mods, but lots who are interested, it might make more sense, as adf said, to just place a (pinned) thread in the appropriate devices' hardware sections, this is what they are there for.
I also agree that the majority of the mods will be specific to a single machine anyway so centralising them is not really a major priority.
Just my thoughts (though I would certainly like to encourage the mod developers & implementers to post their info, pictures, etc. as this is really cool).
Si