Honestly, revert LEAGUE to the Tank meta.

No, you don't want tank meta back, at least not the 50-minutes slug-fest version. I've played since Season 2, and was a no-lifer when tank meta hit. Before season's end when it was finally brought back into line, tank meta was one of the slowest and most tedious metas this game has seen.

Games lasted 50+ minutes, not because there was strategy, but because one bad fight was practically a game loss. Very few champions were viable except tank-busting hyper-carries and, of course, tanks. Bonus points if the tanks could deal % max HP damage.* (Edited slightly because I can't remember if the Sejuani rework was released in S4, or if it came later. My overall point doesn't change.)

There was very little strategy to the game, since everyone except one or two people were borderline unkillable, so every strategy boiled down to "For the love of God, do not let the ADC die, they are the only win condition." This was extremely unhealthy, since a lot of games revolved around minutes-long skirmishes that would basically involve two terrified teams taking potshots at each other while an ADC was hanging as far back as possible.

Of course, when the tank meta was fixed (only took, like, 10 months to do it...), THEN we had an extremely healthy meta where just about any strategy could be pulled off, jungle diversity was very high, and game length was more around the realm of 35 minutes; much more reasonable. It wasn't all sunshine and rainbows, since there were still some outliers in power, but it wasn't to the degree of true "Tank Meta" or what we're having now in the burst meta.

So when you ask for tank meta to come back, think very very carefully about what you wish for. I guarantee you, 50-minute-long turtle-fests are vastly worse than a 15-minute burst fiesta.*

*This isn't to say burst meta isn't a problem, it very much is. But having played tank meta and being an Enchanter main (something that was not exactly viable during tank meta since it meant one less crucial soak-body), I do not look back on that Season very fondly as a whole. The few months of it was when things really came together and one of the healthiest metas to grace League was formed, but it was solid months of agony that we had to suffer through. If you want A tank meta back, you're definitely looking at late Season 4, maybe Season 5. (I can't remember S5 very well, since it was the season where I was in a really bad state IRL, so I've honestly blocked that part of my life out.)

The game is most balanced when tanks are strong. But also most boring to watch.

Riot doesn't care about the average players experience. If it's not flashy for LCS, they don't care.

This hasn't been a game about fun in a long time.

Can do both

Oh.. so you mean what we are practically in right now, which will officially be next patch. Since they all practically get immense buffs with sunfire

Oh, I'm sorry that the game isn't over in 20 minutes anymore. or even 10 minutes.

The tank meta made games last 50+ minutes and there was strategy. That's what I miss :(