So #1 ended up being "getting to the rim from the perimeter and finishing." What should #2 be? More below the jump.
With #2, there will be the 3 remaining options. In order to fill the word minimum, I thought it might be interesting to speculate on which players would best fill the team's #1 need.
On the roster or team free agents: Obviously, Barea and Rubio can help the improvement by finishing better at the rim. Malcolm Lee's first preference also seems to be getting into the paint, so if he provided that as part of his offensive features, it'd probably lead to more court time for him. Derrick Williams had a lot of offensive fouls and travels trying to do this, but he could get better (though the consensus around here is that he is who he is). Beasley was probably the best at this, but he needed to pick his spots to do so (I don't have the numbers, but it seemed to work best when defenders closed out too hard on corner threes and he could use the rim to shield the interior defenders).
In the draft: I didn't watch enough college ball to get a good sense of this, so feel free to throw out names in the comments.
On other NBA rosters: It seems like this type of guy would be in high demand, and if they really wanted to get someone, they'd be better off finding a guy who's undervalued by their current team. Feel free to throw names out there in the comments.
A final note: I'm using 3 point shooting instead of perimeter shooting because a) long twos are an inefficient shot that no team truly needs a lot of and b) Ridnour and Love are excellent mid-range jump shooters, with other players also decent there (Ellington, Williams). Feel free to quibble about that in the comments, but I think that's a worthy distinction.