So, we're trying to make a Dervish more like a Whitworth or a Regulan SRM Trebuchet variant? I'm all for it. The heat management might need a little finesse, but otherwise nice--I wish the Inner Sphere had more SRM boats for cavalry lance support, really. There's no modern Inner Sphere SRM boat concept, either, nothing like what the original Clan Arctic Wolf can do.
EDIT: Partial lie. Some of the MML designs out there are sick, wrong, and amazing at the same time, but there aren't many that I'd trust to back up some AC/20-carrying slashers.