You're late to the party. I've been working on improving Orca, as well. I've achieved this by taking Dolphin 7 and stripping everything away until only the bare minimum to run Orca is left. I've also kept the membership levels in for the sake of creating moderators. I've found that by basing off of Dolphin 7 and not stand-alone Orca, there is more that can be done to improve it. I'm still hard at work with improving Orca and making it a usable forum. I'll keep people posted, and I hope you do the see more same.