I don't think they have any plans of updating or changing anything gameplay wise from D2. As Blizzard indicated in another interview, this is a pure remaster and not a remake. They were going to leave the game concepts untouched and just go mostly for a visual upgrade.
If that is the case, don't expect any annoyances to be removed from the game or updated. Especially if they're looking for a quick buck. They know that simply updating the visuals will garner plenty of sales because there are a lot of old time fans who while still will remember those annoyances, will still probably purchase the game to run through it for the nostalgia factor alone.