I have to say this is a beautiful team. Right from intro I was very interested in testing the team and, thank god, you had an importable menu included! After testing, I don't think there is anything you can really do to improve the team without faltering other aspects of the team. Every member and move is irreplaceable and each moveset is tailored for this very team. The only recommendation I would give is to
replace fight gem with life orb on breloom. This gives him enough power to muscle through threats (and even some would be counters) with an unboosted bullet seed on the switch. It also more reliably takes out those water types that keep kingdra from sweeping. Yes I know that means you'll have an excess of LO users in the team, but I think its even more important to have LO on breloom than chomp (not that that matters or anything, but still).
This is the best team I've seen posted on smogon in a long time (and I follow the RMT section quite often). This is in terms of effectiveness AND originality. Like I said, each member fits perfectly both pokemon choice-wise and each moveset. The only other team I'd say is just as effective is the Classic Rain Offense team here:
http://www.smogon.com/forums/showthread.php?t=3476038
Anyways, amazing job on the team, it works wonders with even me just reading the RMT once, I could successfully pilot the team with a 90+% win rate. Amazing job, and a luvdisc much deserved.
P.S. I enjoy your contributions to the One Piece thread too!!