If you watched Lotuleilei play in college you'd be dying to get him a spot on this team... anywhere. I think the comparisons to Kaz are a bit off because what you're seeing now is a "high effort" player. Kaz was too. But Kaz also wasn't anywhere near as physically gifted as Lotu is. His college career was very much like Rufus Porter's. He was that kind of player. He wasn't a "thinking man's middle linebacker/lunchpail carrying joe who went to Harvard". He went to UNLV and smashed the crap out of anything that came his way and did it quite well just going full bore, because that's all they asked him to do.
He's the classic poly player I was speaking of the other day in Siliga. A kid who played on instinct and strength, intensity and brute force without the benefit of great coaching. Now you have a talented kid who is getting coached up for the first time in his life over the past few weeks (UNLV's coaches are fine... they just aren't NFL coaches for a reason and they aren't coaching in the SEC for a reason).
The kid is making plays with sheer instinct and talent right now. He has not absorbed the system. If you don't get him onto the practice squad then he'll go elsewhere and play and my gut tells me he'll make some noise, even if it is purely on special teams and as a backup/situational player (even a disguised situational pass rusher).
He went to a smaller/low visibility school and still played at an elite level against some very good players and made them look like children. I think he's got the skills to become a special teams demon like Fredd Young and Rufus were and then move into a spot where he can succeed when he gets the fundamentals and the system down and has a chance to learn in practice and at game speed.