You've convinced me! Hoppers FTW !
I'll keep in mind about the colossal siquig but i like it a lot too, and sorry I wanted to refer about picking another mangler, the regular one, not another hero, and i think about just playing one loonbos on cave squig and adding the fungoid shaman for givin extra magic.
Now what about artifacts and traits? I find very funny ,"Fight Another Day" ( Each time this general attacks with its melee weapons, it can make a 2D6" move after all of its attacks have been resolved. If it does so, it must finish the move more than 3" from ennemy units.) combined with the loonboss on mangler, but ... I'll lose the hoppers battleline