What I don't like is that because the tier is an OU suspect test tier.. nearly everyone who is in the tier is there to try garchomp. Consequently you would expect almost every team (or at least the majority) to be some variation of a sand team, which is exactly what happened.
And now because Garchomp almost always is on home territory, people are noticing the 20% hax more.. I seriously think it's more than manageable at the moment, but everyone that absolutely disagrees with it needs to consider the almost permanent sand in this tier at the moment.
Let's face it, the tier hardly encourages rain teams to be designed (etc..) since everybody wants to try 'chomp.