Negative LA-Assignment : Resurrection, but no diamond here

[Dalmosh]

Hello, love your work, and don't mean to derail your thread....

But, looking at your vermin in particular, this jumps out at me.

Do you think there are instances where reducing the HD of a monster PC race should trigger an accompanying size reduction?

I can see arguments either way.
On the one hand, level drain from Negative Energy is a means of incurring one without the other - though is quite background dependent and not applicable to constructs and undead. A reduced HD Great Wyrm makes a lot more intuitive sense than a reduced HD animated house.

On the other, if you are representing monsters as a weaker/younger form of their normal statblock (and they are going to "grow" by taking class levels instead of their normal HD) it might make more sense to drop the size as well. If you have to shave half the HD of a dinosaur to make it viable, why should it retain it's size category? Maybe this is more relevant to the gestalt approach...