Rant over.

Moderators: Moderator, Quality Control, Developer, DM
Does your build have Thaum in it?
Nope.
If the intent is more for RP use, yes the amount of time is unfortunate but there are reasons for it as well. But if its just to be used in RP, keep scrolls on you for extra casts or slot more epic gates if in an RP scenario. Then I would just tell those you are RPing with that sorry have to recast but the Named Summon is still here. Most ppl are understanding of that. If its also during combat I fall back to the scroll use.
A mechanism that would be obviously more complex would be to have two forms of the spell, as mentioned in the spell:
Have a round/level that works in combat, and a minute/level that cancels as soon as combat is entered (or is otherwise pacified against combat).A controlled creature can be commanded to perform a service for you. Such services fall into two categories: immediate tasks and contractual service. Fighting for you in a single battle or taking any other actions that can be accomplished within 1 round per caster level counts as an immediate task; you need not make any agreement or pay any reward for the creature’s help. The creature departs at the end of the spell.
If you choose to exact a longer or more involved form of service from a called creature, you must offer some fair trade in return for that service.
https://www.d20srd.org/srd/spells/gate.htm