Since we're apparently bringing back stat runes
Why not just bring back the the old Runes system? Keep the "Runes Reforged"/Masteries and allow people to personally customize their playstyle again? You can keep the old runes free so new players wont feel gimped but add a price for additional pages like theyre doing currently.
What they have planned with the "stat shards" in pbe I can guarantee it wont end well at all as it doesnt promote diversity but more linearity by having 12 AD or 20 AP from the get go. The other options?
10 Armor split into two shards, 12 MR split as above, 1-10% CRD at lvls1-18, 8% attack speed, or 15-90hp at 1-18.
So what do you think the majority of people would choose? The one that provides more damage as the others except for maybe the attack speed doesnt provide anywhere near the value to offset the dmg shards.