I'm sure this would take a bit of work but the feature would be VERY useful for streamers who have their own websites. Include PHP/CSS/etc files that a streamer could upload to their site (say to streamername.com/songlist/) and inside of DeepBot, enable an option to use a custom website instead of pastebin. The idea would be to have a static URL for a song list and have that list update dynamically without having to do a page reload. Could also be used to be included inside of the sites pre-existing layout (of course that would be up to the streamer to worry about) and the names of songs and the person requesting the song could be linked (songs linked to youtube, names to twitch profiles).
As an additional request, when doing a song request, after the URL, if anything extra is included, save that as a 'comment' to the request. In some streams, subs are allowed to do requests but regular viewers aren't. In such streams, subs might request a song for a viewer and could include a comment for who originally wanted the song. Also could be used for why the song was requested or something else ("I thought of this song when you (did this)". In the bots GUI, a right click on the song could give an option to view any comments (in an editable box with 'save' enabled if any changes were made, along with 'close' to close it).