Hmmm... it just dawned on me.

Part of the battle scripts, including counter scripts seem to have scripts running based on current statuses...
Most enemies don't really have any relatively useful egg scripts (it's simply do nothing).
The same thing occurs with Charm status..
I could be totally wrong, but I think I have something worth looking into..
If the battle script checks actual statuses (like, Egg and Charm status has a specific value that is compared against), you could arguably construct significantly more powerful battle scripts.. such as executing a particular attack while under Silence or massively more evil counters against Poison status (to prevent monster harvesting or something along those lines).