[Remedy]

Hi, solid team obviously. You're using strong and classic pokemons.

However if I had to point a weakness (they aren't really marked), I'd say Sub CM Jirachi (the Rain version with Thunder/Psychock).

This version, will increase in usage with the ban of Genesect, to me, every team should have a way to beat it.
Jirachi can come on Latias, and force it out (else he kills everything).
Then how can you do against a Jirachi behind a Sub?
Rotom-W will have issues, since he can be stalled if the Jirachi spam Substitute waiting for HPump miss, if we add that he can be paralysed on the switch, it become tough.
Heatran is also paralysed on the switch and becomes pretty useless.
Terrakion is killed/paralysed.
The rest of the team isn't too hard to handle for the Jirachi (Scizor get scouted and if he U-Turn, it's the incoming pokemon that is in trouble).

You can force it out, but given the big power houses on Rain team, you'll lose life etc in the process (for instance you switch to Heatran, they go Keldeo and hit anything coming with HPump, you switch to Latias, and then switch back to Jirachi and sub/Thunder to para the incoming pokemon). After some turns, the loop will be favouring the Rain team provided they have an answer to Scizor in Tentacruel or Ferrothorn (or Tornadus-T to some extent).

To me Xatu is the weakest link.
You can shut down this version of Jirachi with a Gliscor, and Gliscor can shut down both Deoxys-D and Breloom.

I'd opt for an offensive version, with 216 Speed and Jolly Nature, you can outspeed Deoxys-D (they won't predict it at all) and Taunt, and Gliscor totally stops Jirachi from substituting or CMing.
So let's say you go Taunt and EQ. You have two slots free, you can go for the stall way, or pick-up Acrobatics to outspeed with the spread I told about and kill Breloom.
Gliscor can't wall it so hard, but he can kill him swiftly, and he isn't threatened by the Stone Edge/Rock Tomb versions.

Moreover you're now less weak to CB Ttar and stuff able to Pursuit you, since they also stop Latias (in Ttar case).

I hope I helped, that's all I got, I may try to find something else, but it would be hard to be honest. This was the biggest threat I saw :p