Enhancements to profiles are coming. Right now they're pretty barebones, but I'm working on tailoring them specifically towards ponies and trainers with appropriate fields/descriptions and an extended "about" section.
Also on the near horizon is the ability to upload photos (more than just an avatar).
I'm contemplating video uploads, but I'm not sure as yet if there will be enough interest to warrant development of that. Please let me know if being able to upload video is something you really want.
Photos would be great. I don't have many photos. Maybe a couple selfies while wearing my big gag, but I would love to share even those when this feature becomes available.
I'll work on adding the ability to upload photos directly. However, if you want, you can email me any photos you want to share, and I'll manually upload them to the site and give you the URLs so you can insert them into posts if you like.