the health stacking has pushed me to the point of almost wanting to quit for a few weeks/months. 2-3+ warmogs per team makes team fighting just zerg fests and not interesting at all. before this season if amumu landed an ult on 4 people it was a big deal because it did more than ~5-10% of every1s health and snared them. with warmog and health stacking it is negligible and amumu gets turned on and blown up. he is separated from his team and out of position by doing the thing that amumu is intended to do.. initiate.
that is just one example.
i personally enjoy assassin type champions, where targetting, timing, and positioning are very important. with warmog stacking, it is much less effective building champions like irelia, shaco, nidalee (ad) and katarina anything other than tanky. warmogs is simply too cheap and the best defensive item in the game by far. it should be obvious to riot if ad carries are getting it that it is too strong.
i really like a lot of new features of season 3, like homeguard boots, new masteries are okay, and some new items are okay, but nothing outweighs the season 2 meta and feeling of the game. builds had more diversity before season 3, and their goal was to diversify builds and make your decisions more important or fit your playstyle or team composition and i strongly feel it has failed to do that, and in fact done the opposite.
I also really am not a fan of the flask + pots, ward + 9 pots, elixir + 6 pots, rejuv beads + 6 pot builds. I think that every1 starting boots actually made laning much more interesting because harassment meant more. i like the idea of harder lanes being able to take another route to manage that difficult lane matchup, but I can't think of any other fix than reverting the base movement speed changes. from my experience these changes have made laning much less enjoyable and favor manaless champions way too much.
season 3 has gone from stacking cleavers to stacking giants belts/warmogs. old trinity force, guardian angel burst type builds rarely exist at this point and get outshined by tankier options in almost every circumstance.
this is not a cry for your approval or a bash to riot, that's just my opinion on the changes from a 1850 elo player.
also want to just talk about irelia real fast.. been playing her a bit lately with little success and consider myself pretty above average at her. the reason? trinity 4.2k gold, warmog 2800. 75 true damage is nothing vs 2-4k hit points. attack speed also got hit hard. just wanted to give her a shout out because from what I have seen she has been affected the most by the item changes. and i also looked up wickd and he is like 31-30 (~50%) with irelia and he is arguably 1 of the best if not the most notorious irelia player, while he has really high win %s on other cheesier champions. in season 1 and 2 he had around 65+% win rates with irelia.