For those using the redemption calculator, I now have added an option that it will show you alternative avios + cash options, where available:

At the moment I only got the alternative options for the RFS rates for routes in zones 1-6, will add other zones, and non-RFS when I manage to find them.
Please note, this correctly calculates the pricing options for quotes with GUF too, the cash breakdown might be useful, when speaking to the agent