Pasha, as Pan you should be more protected than most nations from Enslave Mind. Your troops should have extra MR over normal. Given this, I would not recommend the mindless troops option for Pan. All it does is make your commanders
even more vulnerable. Having mindless components to your armies is good, cause they can rush the enemy lines with impunity (like longdead horse!). But moving your armies to mostly mindless will be very dangerous!
What I would do is recruit masses of really crappy mindful units. Like militia for example. They will draw "fire" from your national Pan units since the Arco targetting AI will consider them easier targets. And then your satyrs and centaurs and such should have no problem killing them and charging at the same time.
One last note is that the achilles heel of any astral nation is... astral
Recruit up some shamans and get those Mind Duels going!! You will probably lose a fair amount of them but if you can knock out the enemy's enslavers the battle may turn in your favor