I would like to have a warmer TC floor... any ideas?

sleepy, on my Lance there is an open air channel from the waste valve hatch up under the shower pan and into the basement. I used to have the same issues. First I sealed up any air gaps in the valve compartment walls to the exterior. Then I lined the box with fiberglass insulation and finally I put a bat of R9 just behind the hatch door. no more cold floor.