We have the ability to suport signed votes on the contract side of guilds and gov 2.0 but have yet to support it on the frontend, mostly because it is a slight UX challenge to support well.
This would mean users could vote for free off chain with their signatures. We would collect these on orbis and then someone could aggregate them and upload them on chain with a single transaction. Some more experimentation would be required to find if there are any cost savings here but it is expected to still cost a similar amount. It is more like we are shifting the cost to one individual (perhaps we could automate this?)
We will support this at some point since it is in the contracts but need to find out how much demand there is before prioritising it.