in Generative components theres an option in the solid node to create a solid "by surface capping" where you have a 3d surface and it slaps ends on it and creates a solid for you, itd be nice to have that in the normal OBD/MS CE modelling toolkit, working in civil infrastructure a lot of the time the solids are weird shapes and not just a square or a circle along a path, and sometimes CE doesnt want to loft a transition along a curve as a solid directly, but creating a shell out of mesh/surfaces is possible, itd be nice to be able to grab the shell and convert it to a solid