Just to report: I have 5 LiHeat (2x A-Type, 2x B-Type, 1x D-Type) risers and all work perfectly! They are really nice and answer really fast on Facebook AND they do custom lengths.
But it seems its just a GEN2 riser?
1. No. Supermicro is selling a few with Gen 3 too (RSC-G2FR-A66 and RSC-R2UG-A2E16-A)
2. No just use the new beta ones. I had problems with the actual one but there is also one older beta.
3. Yes the Ameri-rack seems to be passive. And the idea of making...