Mindbars work fine : the odds of breaking one are fine as they are.
The art of popping a bar is not in finessing the chances of hitting the bar itself with a single cast... it's in clearing the barriers, like CC's and junk self-casts to waste purify's, around it in the most economical way. That's were the difficulties lie. Any fool can toss 50-75 purify's and eventually pop a MB... real skill is using the right amount of the right junk to clear CC's, then knowing when to use purify and when to run serenity at them... dont see any reason to make the game easier for fools... too many of them here already...