There actually used to be a simpler interface to our backend api server in condenser, but it was disabled quite some time ago. I'm reasonably sure that the only way to make a simpler interface than what exists on the blocktrades web site today would be another direct integration into the steemit wallet (like the old one, but better). But we don't host condenser, so that's outside of our control at the moment.

I have considered hosting our own condenser at some point, but it's a reasonably intensive task at the moment to host a condenser if it sees a lot of traffic (which would be the whole point of hosting one of our own), so I'd prefer to wait until there's been some improvements in that area before we offer a customized version.