Thermofoil refinish - how to handle carcasses?

Hello,

For the doors on my cabinets, I'm pretty confident in removing the wrap from the MDF doors and repainting... Although I hate the shape of them s with the tapered sides, so I'm tempted to remake the doors.

However, the carcasses are still a particle board kind of melamine.

How do you handle refinishing these? Just scuff sand and paint and they're OK since they're lower visibility/ touch?