You have a lot more flexibility with a 2seater, and you are not restricted to a RocknRoll bed. You have a lot more layout options than the standard side kitchen/R&R bed.
Things we find essential –
LWB. Gives you more space for bikes, and standing space in the morning when the bed is down.
Diesel heater, mounted under the floor.
Pop Top.
External insulated windscreen cover
Fridge
Nice to have- 4WD. Has got me out of the field at Foel Gasnach, Gisburn, and several cyclocross fields.
100W solar panel
100Ah Lithium battery to run it for a weekend without hookup.
Karitek to get the canoe on the roof
Tailgate bike rack