As a grant recipient, I believe the Hybrid Deferred Dev Fund is the choice that gives the ecosystem the most flexibility on the way to the Non-Direct Funding model.
As pacu explains here, there are parts of the ecosystem that are funded by ZCG that don’t have the runway to keep going if the Dev Fund is unavailable in the lockbox. Also, if something like the lightwalletd infrastructure issue were to happen without a way to fund a response, we would be in trouble.