NO change.
Sadly, the AvA is the only arena left where some effort and skill is needed for bombing.
To argue that you can't single handedly shut down a base, and use that as the reason to revert to the MA bombsight, shouldn't cut it. Using that logic would lead to the old laser guided, can't-miss bombsight, which we still have in the arena settings.
Edit: This is in response to Panzzer.