I'd need membership for starters (ideally lifetime). I've already used the free trial to update mods I had previously published. I've previously spent money on the game for membership among other things but then deleted my accounts due to trust issues with site admins. I feel as though my contributions to mods are exploited by Warzone due to no direct way to support development of mods and that players wanting to use mods in their games need membership. See
https://www.warzone.com/Forum/821079-compensation-mod-authors .
Can't really develop mods without membership because doing so means I can't actually test if mods work myself. It's difficult to communicate exactly what I want to test and any steps that would be useful for debugging, even if it is with someone who has technical knowledge. Development process is too slow and too much of an energy burden to ask for someone else to do testing on your behalf.
I have created a feature request to allow non-members to create and update mods as well:
https://www.warzone.com/Forum/811654-allow-mod-development-sp-nonmembers .
As I previously said, I've already spent money on membership, and unwilling to pay for it this time around.