Although not on the scheme anymore, there are a few of the outgoing Ioniq 5’s on Autotrader, it maybe worth speaking to Motability, to see if they would let you have one of them if your local dealer could get one. That said the new i5, I expect will join the scheme next quarter, which isn’t far away.
The Scenic is nice but, only Hyundai seem to be serious about this in the mainstream market. I’m not a fan of the Enyak, which has its own gremlins and long lead times.
V2L requires a bidirectional charger fitted in the car, rather than a simple software update unfortunately, so if its definately not on yours, its likely to be seen on MY25’s if at all.