[mattbillenstein]

I think your initial instincts that migrating the whole thing to a completely different paradigm for a couple features seems a bit off.

But, build a small prototype of part of it and see how far you get before it pushes back -- that's when you'll really know if it's possible and a good move.

[mattbillenstein]

Also, I will add, re the relational aspect, I did the reverse one time. A company was having awful performance with a non-relational store in a very relational application -- ultimately migrating the backend to a sql database provided a bunch of benefits.