The Soraka and Sona changes are kinda...bad...
Soraka: You accomplished pushing her out of top, but her support role's pretty much ruined. She actually needs buffs.
Sona: SONA TOP STILL WORKS, but you actually nerfed Sona support slightly, probs due to the hotfix (since it was said that the initial change without the hotfix was actually helpful).
I actually think that Sona will still have fringe top lane usage even after you change STE. As for Soraka...you guys overdid it horrendously.