I was thinking: This idea might be nice, that way, there would be no need for a hotkey (well, maybe to focus), and it would look good, a bit like google search
But it has some problems:
1) those people who don't have taskbars, still need the "normal" farr (don't think this is that much of a problem..)
2) identifying the results can get a bit strange, since you'd have the popup comming upwards from the bar, it would generate a strange behaviour from farr..Try selecting the option "edit bar on the bottom". It becomes quite hard to select the first option, since it isn't right below the edit bar. At least I can't use it like that.
3) maybe it would be only more work for mouser to accomplish an option that people would use in the beginning because it's nice to the eye, but would stop using later since it's not very handy.
just my two cents