Heard roos twice say (and fairly recently) that in fact he dropped a full 10kgs!.. 6 is probably bad enough anyway..
I see your point and personally i feel a bit the opposite.. in the sense that i feel a higher pick should be more ready / more likely to play, if anything.
Was gonna reply about JKH, but i cant 'quote / multi quote' anymore..
JKH is a bit of a freak. right from the word go roos was impressed with his afl-like standards in time trials and in pre season and flagged fairly early from memory,
that his habits and work ethic were of an afl standard.. so with JKH i think we just got lucky.
In saying that, he'll start to burn out and be due for a rest soon like a lot of 1st year players anyway, IMO..