Wow nice, thanks! TC has added some nice things since I last played with it. This biome map feature is fun.
It would be nice if we document whats needed to "fully" support Tekkit on TerrainControl and get it put up on https://github.com/Wickth/TerrainControl/wiki/Tekkit
Better still, we make a pack of modded biome configs for it.
Your config seems to be mostly there, I quite like how the world looks overall. I spot checked for ores in the snowy biome and found several of the tekkit ones, so yay.
The oil-as-an-ore trick doesn't work too well here, I'll likely do them only as Bo2's and limit them to a couple biomes. There were some random floating wool blocks, and some of the object placement was a bit weird (see linked images), some of them that had underground bits were getting placed partly floating, but that's a TC thing.
I really like the look of the hellish desert, its amazing, but we'll have to figure out how to prevent the lava rivers from getting water mixed in.
The rubber tree saplings on snow cause the snow to have the missing texture.
I think I'm going to play around with this and maybe target a new world based on TC after Tekkit updates to 1.3+. 1.3's new log rotation would be win for many of TC's trees. I'm sure it will be a while before all the mods update to 1.3, so we have some time to figure it out. :3
A few random snaps of some nice and odd bits.
https://www.dropbox.com/sh/rsms46rqyavhzhw/605FMfisFI?m