Revert the Teleport nerfs
http://leagueoflegends.wikia.com/wiki/Teleport [See Patch History section for more details]
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V5.22: Channel duration increased to 4 seconds from 3.5 seconds.
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V6.13: Channel duration increased to 4.5 seconds from 4 seconds.
- Hypotetical Patch: Channel duration decreased to 3.5 seconds from 4.5 seconds.
There, you manage to deliver a great buff to top-lane. Teleport is the most effective tool top-laners have to impact the game by joining important team fights; if you increase the channeling time by about 26%, guess what happens.
And don't give me that "buuut high-level play abuse tp bruuuuuhh". The crushing majority of the top-lane players ARE struggling, even Riot admitted it.