I would be in for the text pack. I really want the 1.75u escape and the hyper/meta keys people mentioned before - but some novelty keys would make it even better.
If the split kit opens up more room for additional keys I'll suggest my two ideas again. A SysRq key for monolegend people would would prefer that over PrintScr (which actually has a use on linux systems) and maybe a few other geeky keys, but I can't think of much beside the classic "Code" key. I laughed at the idea of a "I'm feeling lucky" button that was bound to your compiler (since it never works the first time), however, I am pretty sure that it is too much text to fit on a single 1u cap