Hey look an unintelligent post! Let's dissect it!
If you thought being forced to have certain pokemon to deal with Blissey and Heatran was annoying, the you're goin to really enjoy (sarcasm) playing around with the Meta Game of Generation 5. With pokemon abilities that borderline absurd and pokemon with stall games that are invincible with out having put out Toxic Spikes, this new generation has proven to be the most limiting of all the past gens.
Translation: "Oh man I don't like it when generations add good new Pokemon! I only want them all to suck because I can't deal with adapting my strategy to fit OH MY GOD Pokemon that weren't in Generation Four! On top of that, I'm going to judge a metagame that hasn't even stabilized yet and call it ****ty and limiting!"
This is absolute bull****, and you know it. This is a new generation, there are new threats. Learn, adapt, deal with it.
In this generation, First priority moves are a must, Must, MUST. Often times you'll find yourself being swept by pokemon who get a 2.0 boost in speed just by having access to sand storm and with out these moves, you're fair game for being swept.
However, THIS I can agree on. Speed is more important now than it was in Gen V.
Mainly though, pack Fighting-type priority (or something that's redic fast and fighting, like Blaziken after a speed boost, this requires Protect to get it though) and you're good to go, seeing as it hits a lot of the blazing-fast threats for SE or a strong Neutral.
Another must have move is Toxic Spikes. With out this crippling invincible stall pokemon (which are very fast and take no set-up time)... they'll take out 2-4 pokemon before you have a chance to even land one hit on them.
THIS, however, is so ****ing wrong I cannot even explain it. There is no wall that is anywhere close it invincible, especially without set-up. Erufuun is also like the only wall that IS fast (and it's only a wall because of priority Subseed making it last a little TOO long), and anyone with half a brain can sacrifice something to break the sub, then you send in something to finish it off. That's 1 Pokemon, not 2-4. Unless you really can't deal with it, in which scenario I suggest you trash your team and start all over again.
On the topic of toxic spikes, I've never used them once so far, and I've been able to deal with most stall teams. My only issue at all is Blissey, and that's because my team is primarily special with only one Physical attacker that can hit for SE Damage.
There are quite a few other things that I havn't listed, but it's just a large headache sometimes and really limits the creativity that one may of had in past gens... The new meta game can be fun and really interesting. All past gen pokemon have been revised with new attacks and abilities, aswell as new pokemon to choose from. If the tiers do not fix some of these "advantages" the new meta game is going to take the term "cookie cutter" to the next level.
If there are so many other things, list them, come on, you can do it!
Also, the one thing that is between that cookie cutter theory and the truth is playstyle and creativity. Think Gen 5 is limiting your creativity? Wrong, you're not being creative enough, instead, think outside the box, think of something new and different, that you haven't tried before, maybe some team synergy you haven't seen others use. The metagame doesn't decide how cookie cutter teams are, YOU DO.
That's all it takes, just keep on trucking and a little more creativity with teams. It's not hard to do.