@Riot: Are you sure you're not lying about "not wanting to set the meta"
Let's just summarize a few examples:
-Lulu was popular in all lanes, but especially "Toxic" in top lane, completely ruining the bruiser top meta. Proceed to nerf Lulu. -Soraka was popular top-lane as an alternative AS WELL AS as a support AND mid. She was harassive but she did not flat out dominate any lane (especially top, where she was about as effective as Renekton!) -Both of the above are cases of Riot promoting the Toplane as a must-bruiser meta. --Not entirely sure, but could the ADC changes be an attempt to tone them out of the top-lane meta too?
-Riven saw quite a bit of use in mid lane, proceed to nerf her HP Regen.
-Annie saw use in bottom lane over mid, proceed to nerf and readjust her skills.
It seems like whenever a champ finds a use outside what's expected, the answer is "nerf it". In fact you noted the next champ's meant to be a top laner - should we expect it nerfed when/if it goes jungle, mid, or sup!?
are examples of champions being too powerful in alternate roles. Specifically Lulu/Soraka were forcing lane opponents out of viability, and Annie did the same to other supports.