summoning monster in the game currently not very fun in my opinion.
the reason I felt it's not fun is because
#1 if I were to be pure magic from beginning to end game, my summoned monster won't be much use against my enemy human army because I can only summon one type of monster until that monster die than I can re summon it again.
#2 I can't make a summon army because each type of monster I can summon is limited to one.
Ways to make summoning monster meaningful
-have multiple summoning of weak monsters to make an army with and have a limited number of strong monsters summons.
-put in magic tech that have to do with summoning and empowering summoning monster to make them stronger so they can keep up with end game human units