SuperNET is NOT a coin. do you understand this?
Apparently he doesn't (nor do I, although I do understand teleport, after a lot of effort to do so) and this appears to be a common thread with your projects. Think about that. Just a bit of constructive criticism here. If it sounds like an attack it isn't meant that way at all.
It did cross my mind also. My concerns is that BBR is about to be connected on non-POW network, which raises questions of cheaper transactions there and whatnot. Everything today is created with best intentions but i personally do not see POS networks too stable, as i tried to ilustrate here
I don't see that concern being any different that saying you're not comfortable being on Poloniex with PoS coins. If you're worried about someone attacking a PoS coin like BTCD and then double spending it or something it's not something that's going to have any sort of direct effect on BBR(not that I think that's likely to happen at all with BTCD). Can't imagine superNET being designed in such a way that some flaw in PoS could translate in to some sort of flaw in BBR.