If you're into machined sabers, they can be a great resource for sure. I've used random parts of theirs in concert with flashguns to make some cool custom sabers. The downside to them is that they struggle to keep things in stock-- but the quality and prices are great.
Their new hilts are still conceptual at this point, but they look to be the Graflex 2.0 approach to other designs. The odds of getting an MPP are pretty low these days, and after years of staring at my Heiland synchronar Vader, I'm just never quite satisfied, so I plan to get their MPP and do like I'm doing with my 2.0-- replaced every little part I can with stuff from Roy and other saber smiths to make it as accurate as possible. Maybe Roman will do an MPP replica eventually, but until then the TCSS version will hopefully be close enough to make me happy.