Hi, can you remove the Choice Specs set? It doesn't really have merit over another offensive Pokemon, like Life Orb Latios. It may be slightly stronger than Latios courtesy of the Choice Specs, but in exchange it's slower and is locked into a move, leaving Goodra unable to take advantage of its great coverage options. It just seems inferior to the Assault Vest set, because you pick Goodra for the special bulk and typing, and if you give it Choice Specs, you're just straddling the line between offensive and defensive, ending up poor at both.
Goodra is not an uncommon sight as a bulky pivot on offensive teams
Um
can also make use of Hydration on rain teams.
Don't bother with this in the overview, after all, the rain set was moved to OO. Probably just something you missed when writing it up. Also, make a quick mention of mediocre speed in the overview, since that's another disadvantage compared to the Latis. Actually, can you replace the mentions of Latias with Latios? It's generally considered better.
Heatran's less prominent now, so you can probably unslash Earthquake, since it's not worth it for just one Pokemon. Just the four primary moves seems good for the set, everything else should just be in moves.
If Goodra runs Modest instead of Quiet, then it might as well also use 16 Speed EVs to outspeed max Speed Adamant Azumarill and Mawile, both of which it can check, although Azumarill needs to have used Belly Drum first.
Can you just explain how the double switches with Goodra would work in Usage Tips? Also, while Dragon Tail's chip damage is nice, it's important to note that Draco Meteor is really the spam move.
Goodra likes to switch in and out a lot, especially with Draco Meteor's attack drop, so teammates who can Rapid Spin or Defog are very appreciated. Wish support is also useful because of Goodra's complete lack of reliable recovery.
Examples? A few more physically defensive Pokemon along with Rotom-W would be good too, like Skarmory.
Examples include Fairy-types such as Florges, Togekiss, and Clefable
Replace Florges with Sylveon, and remove the Togekiss reference, it's not too prominent.
Other than those, mostly just updating it for the metagame, it looks good. Let me know what you think of removing Specs, as well as anything else that I suggested.
QC 3/3