Design-wise maybe. As a character, certainly not. We kept getting told he was part of the big 3 before each movie, and then when each movie came around we learned nothing new about his character. Oscar Isaac is an amazing actor (see Ex Machina and Inside Llewyn Davis), whose character was pissed away with terrible lazy half-assed writing. The misuse of great actors is one of the things that annoys me most about the ST, just look at Benicio Del Toro and Laura Dern as other glaring examples.
I bet even Benecio himself has forgotten he was in the ST.
And the sole purpose of Laura Dern's character was glaring and being an example. The reason she was pretty much instantly forgotten.