Let's not rush things. Things like this need preparation time.
The witnesses should communicate a timeframe. Let's say in two weeks we split.
Before we announce this though, we need to see hundreds of posts of willing participants, making everybody aware, that we as a community can just pack up and start fresh without any baggage, but with the same token amount on the new chain.
Yes the first months will be bad without any exchange but we can do it.

I would love to see the community unite once more and leave Justin on an empty chain. 90% drop in posts, comments and transactions.