I feel like half the "issues" with the runes would be solved if you could choose the stats you got
Bruisers don't really like the AS from precision but they'd love to get some AD together with PtA
Some mages might even like grasp for sustain, but they don't want the hp
Some champions like phase rush but would prefer HP over AP/AD
As much as Runes were heralded as a "chose your own playstyle" approach, the stat gains do shoehorn champions into picking specific trees simply for the AP/AD they'd be giving up for the keystone runes.
That's by far my only problem with the runes since I considered Fleet footwork Morde but the AS is such a turnoff.
I personally am happy with preseason so far though, haven't had this much fun in a long time. :)