Im really happy with the current state of the game.
The last two years have had me a bit tilted because it seemed like every month there was a champion that could 1 v 5 carry a game every time due to balance issues. Yasuo was a long running carry god, zed had his moment too, Jhin, The lethality meta is another example. But now, as the dust settles after the mid season patch, I don't see this problem anymore.
THe last two months or so have been really well balanced, I never feel hopeless in champ select or feel like I don't have enough bans to get rid of the fotms. Every game I feel like is a skill/kit matchup, and it's really nice. Rakan and Xayah are strong because they just got released, but they aren't ridiculous like Illiaoi was on release. Yasuo is still strong, but he's not one shotting people with 2 items anymore. I don't feel like adc's are getting shitstomped anymore. Assassins arent one shotting people without counterplay, and Mages aren't bursting first blood under tower at level 2 (leblanc -.-)
Tl:dr
I like where the games at right now in terms of balance. No one seems too strong, or too weak. It really feels all skill matchup.
Disclaimer: I literally just hit gold yesterday, so these are the views of a silver 1 player and should not be taken offensively.
Those champs in that order are the most played. 4 of the 5 are gank champs and one is a farm then kill everyone champ. That shows the problem with jungle even if laners dont see it.