Also keep in mind summons alao are relates to the lore, these aren't creatures willing to simply help out for a few mp. These are fierce otherworldly beings. There's the need to make the creature look like a boss since it is going to have that role. While this is a no brainer for creatures like Ifrit, summons like Shiva, Moogle King, and others still require that touch.

Thing is, what tribe has Shiva in the first place?? Certainly not the sahagin...