I am on the same boat as yours. Its all depends on foundation goal with Dicourse, how long are we going to use this ? We are working on iteration so it might happen that from next season we are using a new platform. Are we going to use Discourse for Citizen house too ? There are many assumption and point to consider here, best approach in this dynamic fast moving space is to, like you have said, work in iteration.
The team has already done similar plugin for other DAO so, I assume, doing it again would not be a problem. I am not able to understand the future use case because of uncertainties but in current state, I would support this proposal. If the team has a bigger plan then I agree that a more detailed proposal is needed.