There's no fork, soft or otherwise, other than a supply increase, that elimates the need for UTXOs to be shared at a certain scale.

The sharing of UTXOs is ultimately a political system, and a technical implementation can't fix human weakness. At best it shrinks the scale of such system.

That being the case, there's no reason to incur fork risk since the smallest scale shared UTXO is at the family level- where SQL is adequate.