I think the draft already mattered quite a bit in this game. It didn't really need to matter more in my opinion.
For plebs like us, you shouldn't get an auto win if the dude picking tank knows that Tank X counters Assassins Y, Z or an auto loss if he picks the opposite. You can hardly count on that knowledge in Diamond. Expecting it where the majority of the playerbase is (Bronze/Silver/Gold) is a bit much to me.
They are claiming that their changes are taking away those kind of picks, but it looks to me like it's only reinforcing them.
Basically what Bakery asked them here:
With some of the recent changes to Warriors (and the knock-on effect of that change affecting damage dealers) and the way that Supports have been designed for a while now, it seems like you want to move away from 'standard' or 'general' picks that are good in every situation.
Are you scared of the impact that this might have on drafts? Specifically the kind of situation where both teams just want to not lose the draft in the first phase (by leaving themselves open to be countered too hard by a late Tank, Support or Damage pick) and it will end up becoming a much more boring opening to the draft. That kind of situation also might stifle innovation and off-meta picks and compositions.
EDIT: Also, wow, they haven't answered hardly anything.