Hero Balancing
This idea goes hand in hand with map design as some heroes are currently way too strong on a capture the flag game mode. Torbjorn, Bastion, or Symmetra have effectively become must-picks for any team that wants to hold their flag longer than a minute. The incredibly synergy of these heroes is only amplified by the narrow chokepoints most teams have to funnel through, which effectively creates a kill box and makes it exceedingly difficult to push onto an objective. In order to alleviate this, the levels should encourage multiple styles of play and defense so certain characters do not feel required.
Don’t get us wrong, seeing Torbjorn and Symmetra picked at a rather high rate is nice to see. If Blizzard implements a more balanced map design, however, the pool of viable heroes can grow and allow for more interesting experimentation across the board. There will always be some heroes that thrive more, but it would be interesting to see more team compositions beyond, Torbjorn, Symmetra, Lucio, Winston, D.Va, and Soldier 76.