it'd be like giving a rookie who leads the league in scoring the most improved player award. doesn't work that way.
^^ What my argument is trying to state is that Kev started strong and has become a solid contributor. As such he has improved his posting by becoming a respected regular poster. I admit when you set a high bar to begin with people are less likely to notice the improvements and increased contribution but you don't get the respect Kev has from long time site posters without having made improvements.
This is how i see it:
COACH: what did he really improve? without being disrespectful to him, i think he's just the same COACH we know, good thread starter and poster, but i wouldn't say really improved in debates or anything else beside posting bb news/pics etc!
El Freako: he is a good debater and contributor to the site, i remember when i started to post on this forum, he was at only 400-500 posts, and from there on he started to show us who he really is, so yes a very improved member, and he's my 2nd close choice from all the contenders.
PrinceVegeta: i didn't see many of PV's posts before, so i really don't know if he has improved or no, but is a good member nonetheless.
Duality: imho his posts are more mature to say at least compared to 20inchgunstucson (and i don't want to disrespect him with that, or to say it in a bad way, but sometimes he had his "small" conflicts with the admins,etc).That being said, he's a intelligent member as well, and despite his X bans, he become a better debater, a great addition to the site, and definitely improved, so he has my vote on this one.
The_KM: i agree with others on the fact that he really started like we know him now, first posts first help towards other members, he's one of the most helpful members, and imo he's still like that from his beginning, so i wouldn't say KM needs to "improve" or has "improved" more than Freako and Duality (why to repair something if its not broken :P), very good member to say at least.
only my 2 cents