From what I've seen personally the problem isn't either defensive spin, or parry. The problem is actually mallability.

As it stands now you can accelerate and take some fancy muter edges based on accelerate I don't know HOW much these help over all but I tanked pretty fiercly as Rhyendris with a staff and accelerate.

Really this all stands up pretty good, considering when you run out of movement your parry/spin goes to absolute garbage. However Malability continues to work full force and as a 24 dex race thats pretty fair number of attacks it'll cover, when you should actually in reality probably be losing the battle since your sub 0 mvs and tanking more than one person in the logs I've been seeing that everyones screaming OMG overpowered over.

So I mean if you take any intrest at all, in this brief OMG transmuters are over powered fad.
Poke malability in conjuction with 0 mvs and accelerate, it really doesn't look to me like accelerate and 0mvs play any part in its strength.