With regards to Dennard, I think he holds/interferes/grabs WAY too much(he didn't get called nearly as much as he should have and you know if he's a Ram, he'll get flagged), not impressed with his tackling(reminds me of Jenkins, maybe worse) or shedding blocks, his ball skills should be better, and he doesn't seem to play as fast as his combine 40 says he can run (which is probably why he grabs so much).
With regards to Clinton-Dix, he seems to always trail the plays(poor instincts?). He arrives right at the tail end when the play is basically over. When he is part of the play, it's usually because of the play of others(Poor QB throw, pressure from D, other DB's causing deflections, etc). Nothing about his game really stood out to me.