Yeah. Everything's written from scratch with BGL. So there aren't many limitations to types of things. Check-boxes will be cool! If you take a look at Cyan's GUI for wavesets they have about what I have: a pile of number-box-thingies (one of the only Cyan-plugin GUIs I've seen).
But yeah, I'm not planning for it all to use those types of buttons and tabs.

Currently getting some ink on my hands over at the Guild Of Ink-Makers (PyPRP2).