[Zulithe]

To balance their enhanced defense we could give a Zulite fewer life points than a bomy has, or we could just give them the same exact defense as a bomy. Also remember Zulites will probably be even slower on land than a Bomy is (while walking, or maybe the same speed, I'm not sure how it will be worked out by the scripters). We could also make the Zulite weak against crushing weapons if that still wasn't enough, like the ball & chain, since rocks would be more succeptable to a crushing attack than say a piercing or slashing one.

On that note we could also, for example, make the Zori weak against piercing weapons like the trident, or any other number of possibilities to help balance their enhanced abilities in other areas too.

The short of it though is, as we both mentioned, we are probably thinking too much about something that won't amount to anything hehe. It would be interesting to think all of this out though.