This is really awesome, I'm going to be trying it out over the next few days. I'm by no means a Latex expert, but it seems like it could make writing Latex a bit faster and more wysiwyig-ish.

One question - if I want to write a^(b+c), I'll normally write in latex: a^{b+c} to group the b+c as part of the power. I can't figure out how to do the same in the editor - if I write in a^b+c, anything after the "b" will go back down and will no longer be superscripted.