To clarify, while the dev team doesn’t directly participate on other region’s forums. Each region has assigned community managers which help collect aggregate feedback to pass along to the devs technically. That being said nothing wrong with posting your feedback here on the U.S. forums of course.
Now as far as the whole solo queue versus team queue debate. The problem is considering how it affects matchmaking, we recently learned that the matchmaker takes a long time to develop and any changes would take months to vet out (as they are possibly planning to introduce role queue and an enforced 2-2-2 team comp in the standard rule set). And there would be some serious concerns to whether there would be any benefit to grouping up anymore if there was a dedicated solo queue in Overwatch. Heroes of the Storm used to separate their solo queue and team queue ranked games into separate ladders and it caused the team queue to have extremely long matchmaking times. Now they have combined both into the same ranked ladder (but solo queue players still have the option to the only pair with solo queue players), however, it is still causing long queue times for team queues in that game from what I understand. So realistically, for the purposes of finding matches quickly, I do not anticipate they will separate solo queue and team queues anytime soon in Overwatch.