for some normal units exp matters too .
examples : jotunheim , big tramplers like caelum mammuths , various kinds of knights , pangenean stronger units like minotaurs .
there are imho 3 main criterias for normal units that they profit from additional exp :
- base hp of 20+
- regeneration , recuperation , immortality to heal afflictions are good too
- blessable
i think base / new era pan is the king here with minotaurs and centaurs because they have recuperation too .
but militia etc. with less than at least 20 hp die too easy from only 1 hit via damage spell or archerfire .
one summon prophits very well from exp too :
vampires because they get revived and iirc keep their exp
