I actually like the change to her e. I've never thought of it as being as terrible as people say. I like that it can zone pretty well (especially when doing dragon by using it by the blue entrance), save people etc. The buffed slow is gonna be a lot more helpful than it seems imo.
Anyway her r
kinda scales on ad due to her w. 6% of her total ad on every bullet for up to 6 bullets (and now 6-8 bullets) isn't that bad
I've never seen her damage to be her problem, cause she does a ton of it. My issue with MF has always been her lack of mobility, lack of safety, lack of utility compared to adcs like sivir or ashe, and her lack of range. I really think the changes are gonna help her quite a bit though.
My personal favorite change is Strut not breaking if she's shielded, gonna start rushing BT on her and making my friend play a shield support