I am not a super hardcore Diablo 3-er though I have started to get back into it with all the patches and things. I love the direction things are going and hope Reaper of Souls continues in this trend (as it seems promised to). My main character is a Monk and when playing Inferno I find there's a couple of abilities that throw me off a bit so I will just go over them briefly and hopefully this will be helpful to Blizzard.
1.) Dashing Strike:
Problem: When this ability is used without a target you only move about 3 steps forward. This is frustrating but OK. Or would be except in intense monster battles your mouse doesn't always land EXACTLY on a target when you pop that Dashing Strike so instead of moving out of a troublesome situation you do that 3 step shuffle and find yourself still sitting in the !@#$.
Solution: Either a more generous targeting algorithm for the ability where it will use as target a monster within so many units from your mouse cursor if none is directly targeted. Alternately, it could lose the target requirement and just move to the mouse cursor when used, but perhaps there is a reasoning for this not to be the case to begin with (like Leap and Teleport which don't require a target to move max distance).
2.) Lashing Tail Kick - Hand of Ytar Rune:
Problem: This ability appears to be a simple point target cast like Hydra or Meteor. However, when it is cast it seems to be treated like a projectile. What this means is that if there's a little doodad you can't walk through in the pathway of the cast it will get caught on that doodad and instead of hitting your target your 40 spirit goes to waste slapping the corner of some edge you were barely in line with.
Solution: Simple and straightforward, make it a true point target cast that ignores doodads/terrain. Again, there may be a reason for this to not be that way, but I find myself not wanting to use this rune because of this unpredictability.
Anyway, I know it's easier for me to say "SOLVE IT LIKE THIS" than the solutions actually are to code. And perhaps Blizzard disagrees with my assessments of these things as problems but I find them frustrating to my gaming experience and so I figured I'd write this up just in case it hasn't made it to the Development Team's pile of issues.
Thanks for reading and happy hunting!