Making textures is a massive pain and only a few people here can actually do it properly. Also, someone would have to take the pictures (unless you're allowing photographs by other people, in which case you could just allow textures in general)
Compile to BSP *without* vis and light. Use -meta and -patchmeta. It will complain about leaking, but it doesn't matter since you won't be compiling vis anyway. Then just convert the BSP to ASE. You can't convert MAP to anything.