I've played the game and all incantations of Mass Effect and I gave this four stars. Yes there are some bugs but virtually every single game has them initially these days, they'll be sorted out with updates. However, I found that if I moved 'Kirk' from a position, Spock would stop running into a wall and complete the objective, hack a door, something he never failed to do. Spock doing this only happened twice though.
On a few occasions Spock didn't heal me like you say but that was because he was either pinned down elsewhere or was injured himself. With regards to jumping, I take it you mean climbing? I haven't had a problem, if you mean jumping across gaps, I haven't had a problem either but you have to make sure your in the right position to be able to do it.
Some of the graphics aren't the best but some are absolutely fantastic so I disagree that they would have been an embarrassment. The game play is similar to Mass Effect, it would be great if it was identical but it's not Mass Effect.
Paramount and CBS have captured the atmosphere and humour of the current Star Trek as directed by JJ Abrams but they had could have done so much more hence my four stars. The Star Trek universe is absolutely enormous and they could have chosen a more engaging enemy than the Gorn but it's still a good 'first effort' and hopefully not the last.