Allowing a working group to operate with less than 3 stewards requires a rule change, and I think having an odd number is fairly important for decision making. Not to mention that reducing the number of signers on a multisig with hundreds of thousands of dollars is probably not ideal. A safer version of this could look like:
Create a “NONE BELOW” option, and if there are not at least 3 candidates above that option, the working group is effectively paused and all remaining funds must be sent back to wallet.ensdao.eth by current stewards.
I don’t think this breaks any rules/requires a DAO vote (not 100% confidence, feel free to fact check) - it could just be implemented my MetaGov when the voting for steward elections goes live (either next week or after the retro period if that proposal passes).
Edit: I think ~everybody agrees that there needs to be some independent entity to pay kpk and keep track of service providers, so there would need to be a footnote of what happens if metagov is paused via the above voting mechanism.