stolen from reddit:
Q - Will older heroes, e.g. Murky, be updated/reworked?
A - The team is considering it carefully, and every hero might be reworked at some point if need be. Data is a major point.
They also have interesting numbers vs rank distribution data for the end of Season 1 Ranking:
11% Bronze. 35% silver. 23% Gold. 16% Plat. 14% Diamond. 1% Master.
Bit more silver and less bronze than I would have expected, but no big surprises. Would have love to see added 'activity vs league 'data, but they didn't comment on that as far as I've seen so far.