Yes, sadly, the code is not available for staff to use. But, I'd still like to say my thoughts on the ideas themselves.
Firstly, I think you'd like Impressive Title servers, as many of them have pets, quests, and NPCs with shops. Personally, it can get boring rather quickly to me, mostly without people to play it with. Feral-Heart is a more chat and roleplay based game where you make the story rather than follow one.
Next, there are item packs that add "buddy" animals. They don't really do anything, but they're kinda like a pet.
Lastly, I honestly didn't know the songs were copyrighted. >.> But it'd be awesome to see a remake of Sky's Rim with all the detail the map makers put into the new maps. Also, if you didn't know, there is a downloadable map pack to go to the old maps. I don't have the link on hand probably, but it's most likely rather easy to find.
Thank you for the suggestions. ^^