Getting “outcomped” in Quick Match in general is a negative experience and something we’ve been actively working on improvements for. Lead Systems Designer Joe Piepiora shared some background on our plans for this in a Reddit AMA back in April-
Both the Hero & Live Design teams have recently been discussing sustain as well, and are looking at it both from the perspective of how it impacts off-lane matchups, and from the perspective of how mana functions in our game as a whole. We’re still early in these conversations so we don’t have details to share just yet, but I wanted to at least confirm that this feedback is on our radar.