well, i have to say i am not fond of noobs aswell, and i think a guy who isn't able to unlock the special cup for his cartridge might not have his place at the cdm, especially because he comes just to lose all his matchs : this may be boring and frustrating for him, and it increases the length of the poules "for nothing". i personnaly think 50 players is great only if these 50 players are "true players", and it would be a pain if there were 20 good players and 30 noobs
but if a noob comes at the cdm, then i think we have to welcome him even if it is not a playground. this noobs paid as much as you and me, and he should play enough before being eliminated : i would find abusive that someone can be eliminated after 2 or 3 hours of play (even a noob).
another thing is that we were all noobs at the beginning : some guys came as total noobs at their first cdm, but they progressed a lot and are now good players, like flo chollet, tifitf (at least in BM) and maybe aron. i think it would have been a pity if these guys were too badly taken into account, for instance by saying them "it s a world championship, you shouldn t be here, so don t complain about having playing just 2 hours per day".
we also all know that freeplay can t replace the true competition play : lots of players don t want to waste their time to play with noobs, they prefer to train with other good players. that is also human, and i confess i am also concerned by this behaviour
but i don t think this kind of "segregation" is really nice
for the double elim, i guess you see it as a tool to compensate some badluck in the brackets or bad result in a match against a weaker player : i don t find it s a so cool idea :
firstly, it would deny the surprises in the final phasis : it s already a bit difficult for a "good but not top" player to pass the first round of final phasis, so if top players get another chance to come back after an elimination, it would be a bit desespering for other players
some examples : on my opinion the MR was a bit more memorable in 2012 than other years because of the surprises which occured : scoub eliminated by me, mario eliminated by conor, and flo almost eliminated by you (KVD). if all those top players had another chance to come back, all these surprises would probably be nullified
secondly, maybe you think also a bit about you, like "i will get another chance", but so will other top players, and you will still have to face other better players in losers brackets : i think it won t change the main problem, which is "too many strong players"
if i think about myself, i disagree to restrict poules phasis to just mushroom and flower cups in GP, because i think i have better chances of star and special cups
and for the poules 2013, if for BM - GP you finish 2-3h after the MR poules, in fact they were only 1-2h longer, taking into account the fact it started 1h later (due to journalists).