How I Would Nerf Teleport (Early Game)
With the recent changes to death timers, teleport has become too safe of an option early game. DEATH TIMERS LEVELS 1-6 10-22.5 seconds (at levels 1-6) ⇒ 6-16 seconds (at levels 1-6) DEATH TIMERS LEVEL 7 25 seconds ⇒ 21 seconds DEATH TIMERS LEVEL 8+ unchanged
Not only do you have a summoner spell giving you map pressure, but it makes dying in lane not as bad as it should be.
It feels terrible to kill your laner early game (levels 1-5), only to have them teleport to your lane while you're trying to push. Usually, killing your laner means you have used a lot of mana/hp, and with such short death timers early game, the other laner just comes back and can force you to back, actually putting you at a disadvantage with all the experience and minions you'll miss more than him, when in reality you should be rewarded for killing your laner.
I would nerf teleport like this: (If you take teleport as a summoner spell) Until level 6, your death timer is extended by 5 seconds.
This would help give enough room for the laner to push the wave and come back without missing as much compared to the other laner.