One thing that might be getting people excited to bump up so quickly is the fact that many toons have been balanced out and in general everyone is stronger. Some took a hit though, but its mostly the lock down blanket damage types. Keep in mind that you aren't just moving toons up because you think they are better, they have to also be better then the competition.
Ignitor's swings arent as clunky, but that doesn't mean Blademaster should automatically be moved to Lower A. Is he able to compete with the Lower A Skylanders. If he cannot, he should not moved.
I would insist all recommendations be tested on the field and not just theoretical ideas causing the adjustments.
Most of them are tested in the field. However, theoretical recommendations can help too, even if they don't make as much of an impact as tested ones do.