In the BF4-Forum is this thread
http://www.artificialaiming.net/foru...t-buglist.html there you can post suggestions
or wishes.
And for the problems with heli and knife there are threads too but donīt know where.
Rummage (donīt know, is it the right word?? my english suxx) around in the BF4-Section there are a few good threads to adjust the aimbot.
Hope it helps.