A close to impossible task, if anyone can do it's probably Heikki though.
Unfortunately I expect this to go the way of zheap et al. Fundamental design changes like this have just had such a rough time of succeeding thus far.
I think for such a change to work it probably needs not just the support of Neon but also of say Microsoft (current stewards of Citus) that have larger engineering resources to throw at the problem and grind out all the bugs.