Balance is a very subjective thing - Ultimately, it is always going to be contentious but the simple fact is that FD obviously agreed the revised drag affect was not in-line with their intentions. That is moot though.At risk of going OT here but it was balanced. Anybody could use it.
The point is the "ADS removal complaints" are NOT a balancing concern and while I agree FD should never have removed the ADS in the first place based on their own rule-book regarding implementing changes, it is not something that has a broad "game balance" impact on everyone regardless of their gameplay choices (unlike combat changes).