Instead of attack speed increase, change it to reload speed increase OR clip size increase (possibly both?)
Here's my reasoning:
1. Attack speed increase is not noticeable on most guns, even high attack speed increase. I haven't done much personal testing, but I've heard from many people that it's barely noticeable in a lot of guns, including the Magnus line.
2. Attack speed increase on guns is almost rendered useless by reloads anyway. Any increase, noticeable or not, is almost completely counteracted by the lengthy reload speed. Most players opt to avoid reloads entirely by not firing every bullet in the gun and then waiting for the cooldown.
3. Reducing reload speed would effectively increase the attack speed of guns by reducing the time between bursts.
4. Increasing clip size would also increase the attack speed by increasing the time between reloads.
5. Because if the incredibly variable difference in attack speed between guns, attack speed increases effect every gun very differently and effects some almost not at all. Increasing reload speed or clip size will positively effect every gun, and not make players with gunslinger gear stick to guns that specifically get better benefits from increased attack speed.
These are just a few reasons. If you agree, please post here. If you don't, please post here telling me why.
I'd definitely love to see +Attack Speed also impact reload speed. That would be ideal, I think.