Well, you raise some interesting points and I will try to be as clear as possible. Firstly, on the issue of Riker and Spock, although they were not seen in command of their new vassals, they did take command as first officers on many occasions so they command abilities were tested. Secondly, I did consider adding more Captains like, Scott, LaForge, Dekker and even Sulu, but I decided against this for two reasons. Firstly there would be too many to vote for and we would not see a clear winner and secondly I did not fill that we saw the other Captains in Command often enough. I am sorry to anybody who fills that his or her favourite Captain was left of the vote but I did try to get all of the main ones in. As for your second question, when deciding who you think is the best simply consider the good and bad points to the captains and decide who you think was the best…failing that just chose your favourite