I like Jenkins and the other two-way guards as well, Darius Morris and Reggie Jackson.
I'm convinced that Avery Bradley can score for the Celtics, possibly in microwave fashion, from the 2-guard spot. Therefore, I'd like to see him play with Delonte at the 1 this year, and possibly one of these other dudes in the future if Delonte ends up our starting 2-guard one day. So, one of Jenkins, Morris or Jackson can come in and do his first year on the bench/d-league thing, learn the Celtics system and prepare for the long slog into rotational minutes....
My overall first choice would be one of the project centers Tyler or Nogueira for way down the line (though sometimes a project can turn into situational rebounder/defender more rapidly than anyone would have guessed)
and my second choice would be one of the 3 guards above..