Do a majority of the people actually find the new mastery system balanced?

I wish we could just remove runes and masteries all together. Would make balancing champions that much easier, and less for the player to have to worry about. I feeling like properly setting up runes/masteries is sort of like a 'forced' mini-game that nobody enjoys but has to do to play league.

Very pointless to have in a MOBA.

No. Way too much damage in the game for absolutely no reason.

I think it's all right. Not the best since they keystones have made balancing a nightmare, but they did clean up a lot of useless masteries from Season 5, and categorized them correctly (No more lifesteal in utility huzzah!).

Like every season, this one had its ups and downs. The masteries aint perfect that's for sure, but I don't think they're unbalanced or broken. If anything they've tried really hard to balance them. Remember the first iteration of Thunderlords? Goodness that was a nightmare...

it is a good idea could it be better sure but it feels like a part of the champion i play unlike old masteries so it is a vastly better than the old system so its ok in my book

Its ok but it heavily favors offense over defense and I hope they update it soon.