1. Language support, at least bash and php. 2. Line numbers on the left 3. par lines (0,2,4,etc) being a bit gray non par lines (1,3,5,etc) a lightish gray 4. Option to make everything darker, to work during the night and not make your eyes suffer so much.

That would be all =)

Looks awesome by the way and good luck on the project, only remember to fix the