Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
I just want to ask you a question. A while back while you were number 1 on the ladder I battled you and I swept you with a Manaphy using tail glow hydration. Did I give you any ideas for this team? For recommendations, I would tell you to make Kyogre a little more bulkier. Your team relies on...
I would take into consideration that your team has no fire moves or special moves super effective against steels. Maybe if you do put Latias you might want to put HP fire on it. I would worry about walls like skarmory or bronzong.
Maybe we have something to learn from how the Japanese use Cresselia. Here is a translated page (not very well) of the Japanese competitive wiki.
Edit: Eric the Espeon-I use Cresselia specifically because it is uber in Japan.
The thing that bothers me is that yache berry was the reason that garchomp got banned, pretty much (I don't want to start a giant argument). I think banning items on stuff would get far too complex. Anyway I am excited testing it.
I have been using ho-oh for a very long time in ubers very effectively. The fact is two switch ins is all ho-oh needs. Even in ubers a choice band ho-oh will sweep most teams for me. If garchomp is uber, most definably ho-oh isn't.
It was announced that the DSi does not come out in the US till late next year but for some reason I doubt this because the DSi in japan comes out in November.