There hasn't really been much discussion on the VRs, particularly Gods Only, so how about we touch on that for a moment.
I don't really have any questions for the top ranks, but I think that there are some things worth asking about regarding B and C.
For starters, I think that if Dialga and Palkia are going to sit in B, it only makes sense for Reshiram to be in there too. I mean as stat donors they're all practically the same, with Dialga and Reshiram switching just Def and SpD, and Palkia having 10 more Spe than Reshiram at the cost of 10 HP. Plus whatever niche in the meta you define for Palkia and Dialga, I'm sure Reshiram's is just as good. Reshiram's typing and stats let it defensively check a bunch of pokemon uninvested. In particular being an awesome counter to Serperior and Tapu Koko, two of the most dangerous SpA receivers, as well as Spe Magearna. Reshiram is also a powerhouse offensively, and has another niche in being able to find room to chuck a cheeky Toxic on Mega Sableye. So I believe that it's fair for Reshiram to move up to B, alongside Palkia and Dialga.
With that said though, Palkia doesn't seem to have the same defensive utility as Dialga and Reshiram at a glance, so unless it has a strong niche that someone can point out to me, perhaps Palkia and Reshiram should swap ranks.
Another God I think should rise is Solgaleo. Solgaleo's spread is actually awesome for balanced builds and is a bit under appreciated in my opinion. To my experience some of the most common "go to" Gods for balance teams seem to be Giratina-O, Ho-Oh, and Groudon. All three of these are A vs Solgaleo's C rank, when comparatively Solgaleo isn't that bad. I mean look at the stats comparison between Solgaleo and Ho-Oh, sure Ho-Oh has way more SpD, but outside of that all of Solgaleo's stats are higher. Where as Groudon and Giratina-O each have as many stats up on Solgaleo as he does on them, with the highest deviation in favour of the A ranks being Groudon's 33 extra defence, and Giratina's 13 extra HP. Though Solgaleo has 37 more HP than Groudon, and 17 more Atk than Giratina-O. So the point is, Solgaleo's stat spread is severely underrated. Solgaleo's HP and Atk in particular are among the best. What's more is that Solgaleo itself is no under performer as a stand alone mon in the meta either. Admittedly it's not as dominating as other Gods such as Primal Groudon, but to my experience it always plays a solid role in checking a plethora of threats that balance teams often struggle against, greatly softening the match ups against Xerneas, Deoxys, Tapu Lele, Swellow, Clefable, Serperior, Magearna, and more. Hence I think that at the very least, Solgaleo is a step above the other pokemon in C and should be bumped up.
I've used Reshiram and Solgaleo each a decent amount, as well as many of the other popular Gods, but the next things I haven't really used or seen so please enlighten me if I'm missing something.
Yveltal doesn't seem too awesome, and I'm wondering if it could drop to C. I mean at 126/131/95/131/98/99 you've got 3 good stats and 3 usable stats. Strong HP and good mixed offences are cool and all, but there are a bunch of pokemon with strong mixed offences to donate, and 131 is barely stronger than standard OU. I just don't understand why I would want to use Yveltal over something like Kyurem-W (who is currently in the same rank), who's stats are almost identical outside of sacrificing around 10 Atk for nearly 40 extra SpA. Or Rayquazza, who admittedly sacrifices a bit more bulk, especially in HP, but has 19 extra points in each offence. It just seems to me that unless someone can point out a substantial niche that Yveltal has as a stand alone mon, it doesn't have much value as a God.
Next. Aegislash. What does this even do? I mean you have 150 Def and SpD then 4 dead stats. So it seems an Aegislash team is basically a Shuckle team where you're two powerhouses are only 65% as strong as Shuckle's, but you have an Aegislash. I mean is that actually good or is it outclassed by Shuckle? Is it worthy of being in C or does it belong in Ubers you should not run? I've never seen it someone please help me.
Also just one more point of discussion. With the Deoxys-A suspect going on, do you expect much of an increase in things like Pheromosa, Deoxys, and Hoopa-U, or are they all mainly outclassed by Rayquazza? Also will Kyurem-W perhaps see a rise in usage and viability with it's 170 SpA no longer rivalled by Deoxys-A?
Tl;Dr
Reshiram C -> B
Palkia B -> C?
Solgaleo C -> B
Yveltal B -> C?
Aegislash C -> Do not use?
Deoxys A replacements?