Hopefully they're doing this like naughty dog did with jak and daxter. When several people where working on the concept of jak and daxter while the rest were still finalizing crash team racing.
December 13th 2012: Went 8-0 Stock Unranked FFA. (Jak)
January 10th 2013: Sniped Asis_aka_talent into Jak's lvl 1. (Uncle Radec)
April 16th 2013: Caught parappa's lvl 2 with Sweet Tooth's lvl 1 and didn't die in the process (Sweet Tooth)
May 5th 2013: Got my Radec eviscerated by whaatxddd's radec in 1v1. Kmart, u better watch out.
Just learnt "Drake" and is now learning "Nariko".
They get these rumor from open positions for art directors and programers.
Did they ever suspect that they would make more DLC for this game and update it in the future? For all we know this game could be just constantly updated over the years so it never gets old but utilising the same core mechanics. I mean DLC characters and maps, new modes. What could you do in a sequel that would make the game different from the way it is now? I think the game has perfect core mechanics that don't need to be changed, now it's all about adding to it.
I doubt that will ever happen. A game does not survive of DLC.
Team Fortress 2
But I agree. They should put in a bunch of highly requested DLC characters, stages, items and then of course fix stuff on the way.
I would like to see more hotfixes. I would rather have them test something rather than leave the online issues as is.