I know Otunga isn't the best wrestler or anything; I even remember watching referree Corderis (sp?) burying Otunga for the same reasons you mentioned, but I just see them pushing him to be the next gem from the Nexus. They seem to be high on him, plus he's got the Hollywood connection going on, so realistically I see them going that route.
I dunno, when he guest hosted RAW earlier this year, I saw potential. He seems to be slightly different from that nowadays (he had RAW shaved in his hair, brought his entourage with him, compared to now it looks like he doesn't even comb his hair looking like he just got out of bed
). Basically he looked a bit more polished back then in the spring.
I think he should've went solo, he didn't need to be part of the Nexus. Hell, even Daniel Bryan and Darren Young were both in The Nexus. They went solo. Same thing should've happened with Otunga earlier on. Now he's just Wade Barrett's bitch. The biggest bitch out of the bunch and it's held him back, clouding any potential making him look weak.