Now I will list the benefits to the gameplay that could result from a restriction of the matchmaking to +/- 3:
1) the futility of lev. 26 and all of his suff
As is expected, the low population of 26 lev players is notorious, no top player at this level, because there are no chance to gain ladder points, because the gap between 26 and 30 is too high as we all know. But level 26 could be fun! I take a look on 26 stuff: very nice legendary torso and legs, epic and legendary drones, weapons, epic teleport and charge ecc. ALL WASTED, because almost no one plays at this level, and there is no reason for this, it is sufficient to limit matchmaking to +/- 3 to resolve and increase gameplay variety and fun.
2) many BORING balances and strategies would fall.
It is now clear that most of the top players play at 23, with this fix they would risk to meet a 26, but NOT as happens now, that 26 is just a passing level and therefore there are very few good players, the risk will be to meet a 26 top player with all black stuff and powerful weapons and good strategy. This would induce many 23 to change to 22 (where you could meet at least a 25) revolutionizing all the tactics and strategies that, let's face it, they're getting really boring ... all the same.
3) coming soon...