invulnerability and inhib towers
TL;DR: I've seen cheese more dangerous than the new inhib towers, maybe buff them and make their baby exhaust effect more visible so it looks like it's actually doing something.
Champions with a skill that makes towers unable to damage them are kind of negating the point of stopping split pushers from diving you, I mean what are you going to do when a fiora just ults you under tower and cuts off 90% of your health while the tower just fucks off and attacks minions? or a tryndamere, sure at least trynd is being hit by the tower and is getting his damage hit, but it's not stopping him from pressing r and critting you to death before spinning away like a merry go round on steroids, or a fizz who jumps in and 3 shots you before troll poling away since it's cooldown is spammable.
Point being the inhibitor towers are suppose to stop this from happening, yet with their pitiful damage they feel like they do nothing to actually stop people from diving you, and the ramp up on their damage is also so pathetic that it feels like the tower doesn't even have a ramp up and is just dealing a flat amount of damage. Sure you gave them a shiny lazer and a decent mechanic to help stop split pushers from just diving whoever they want, but when what you added has no visible impact it feels like it wasn't added at all and the people who have to deal with this in their matches feel lied to because the effect and the VISIBLE effect don't add up.
Then there's the fact that there are some split pushers that take towers so fast that even if you're there attacking them to try and push them off they'll just take the tower and kill you anyway, I mean if the tower attacked enemy champions when a friendly champion attacked them this wouldn't be an issue at all, if anything it would make the enemy team split pushing you not the most toxic part of the game to play against, but I can see the issues with that being a thing so I'm glad it's not in the game.
In the end the new inhib and nexus towers feel extremely weak to the point that replacing them with a kitten that hands out cupcakes to champions walking by would look and feel more effective.