http://ichun.us/mods/sync/ This allows creating basically clones in stasis chambers that you can teleport to. So you can have different inventory setups and teleport between bodies/inventories. It could have some interesting uses, and I *think* you can set the body you are inserted to upon death, so you can have an inventory setup ready for rescuing your inventory when you die. I have only seen this mod in use a little on youtube, but from what I have seen it is not very OP, and could be put to some very creative and useful purposes. For instance you could put a chamber in your Thaumcraft area that you teleport into that has all of your thaumcraft research materials and wands, and another in your main power generation area that has an inventory set up for maintaining your base, and yet another chamber at your mob spawner decked out in battle gear so you can instantly fight the mobs yourself instead of relying on machines. I could go on, but I shant, check it out and lemme know what you think.
I have seen this mod before, and it does look really cool, but we need to get a better look a the more technical aspects of it.
This could be nice to have, having a clone in the bazaar with enderchest and such so you dont need to travel all the time. But if we get loads of clones it might start to lag the server since it's a new player for every clone with it's own inventory and data. If we are going to have such a mod you might need to put restrictions on the amount of clones per player. People could also just spam them and let them stand around everywhere... Would be nice though
I believe each clone when not in use is stored as nothing more than an inventory, or a chest rather than another active player.