Ace Emerald
Cyclic, lunar, metamorphosing
Rotom-H is one that's got a very good objective case for it. It's had a good amount of success at the first round of Regionals, and its typing and ability are pretty unmatched right now. Mega Blaziken is unproven so I could see it staying where it's at (although I can almost promise someone will eventually tap into it), but regular Blaziken is really solid and underutilized right now. Sure, it's frail, but so are A-rank Talonflame, Gengar, Bisharp, and Terrakion. It's more about what it brings to the table on the teams it's on. It can outspeed (after a Speed Boost) and KO Landorus-T, Kangaskhan, Heatran, Bisharp, Terrakion, and Aegislash.
Certainly don't think any should be bumped from C-E into A-B barring the obvious one (Clefairy) and two others that have seen success at Regionals the last two weeks (Virizion, Weavile). The arrows don't indicate exactly how far I'd move them up, rather how strongly I feel about where they should be moving.
Also agree with the above post that Metagross should be in C or even C+ / B- (regular Metagross)
I agree with a lot of your thoughts on changes in rank, but may I ask why you feel 4 arrows strongly that Mega Sableye should move up? Has it recently proved itself somewhere, or do you feel it has uptapped potential? Haven't seen anyone really use it well yet but it does seem interesting.