Mass aid seems to work more or less okay, though it has some bugs. On browser:
Having used it on my neighbours, it did not cause the individual Aid buttons to be hidden - pressing them gave the message "You cannot aid this person at the present time".
Sometimes the neighbourly helper screen is shown on top of the neighbourhood/guild/friend carousel so you can't access them without restarting the game.
I got an internal error message at one point - the helper was offering to aid my neighbours even though it hadn't been 24 hours since I last did them all. The error message appeared when I hit the aid button in the helper so it was obviously confused in some way.
On a personal note, I would prefer the neighbourly helper to be the 4th tab rather than the 1st - I seem to hit the tab I want according to it's position rather than the icon and now that they've been re-ordered that doesn't work any more for me!
Would be useful to include the tavern visits too.