Heyo Captains,
While +/- 1 MM is a commonly brought up suggestion by players we have no such plans in the near future to test or implement this request. While it is a popular topic, its implementation would bring tons of pluses, minuses and unknown for all the game aspects - for balance, community, monetization and so on.
The fact we're not planning to introduce +/-1 MM doesn't mean that we're not improving and optimizing matchmaking as a whole. We've heard your complaints and recognise one of the most painful spots is the 8th tier, which meets 10th too often - we are looking at ways to address this. In update 0.7.11 we improved matchmaking for 8-10 tiers by some margin and we're planning to continue improving it (of course not forgetting other tiers).
Keep an eye out for Dev Blogs, Dev Bulletins, and Patch notes for information any upcoming changes.
Fem,