A guild should be able to buy a customizable Arcade gate of its own, maybe even several with added investment. It'd be operated like the old mineral ones were, along with the relevant deprecated achievements being reactivated. The existing door system can be used to keep the riffraff away from the console and crown gains for deposits would now be unnecessary.
Optionally, a gate could require a significant flat amount of minerals to launch and would last a limited time. I could see guilds rerolling the levels they got by depositing another, preferably smaller batch of assorted minerals too.
you don't simply build an arcade gate. I'm sure that if knights could do that we would already have a spaceship.
on a side note, gfates requiring a minum amount of minerals to work were a thing in beta, if I remember correctly.