Comment 178 for bug 668415

Constantine & Mark: Yes, i've tried the top-left corner invocation. It avoids the problem i mentioned before, but... it's slow and i prefer the current left edge invocation. I also prefer to have all the left edge invoke the launcher, and top-left is not intuitive for new users. If it has to be top-left corner invocation, 11.04 original top-left corner movement is better i think.

For left edge invocation, problems like the "back button" one needs to be addressed. I like left edge invocation over top-left, but false positives make it fairly unusable. This particular problem is really annoying for me, but surely other users have hit different false positives. I haven't look Unity code myself and wouldn't know where to start, but if this could be avoided with better heuristics, that would be great.