Is Serpentine a no future project?
As much as I enjoy working on Serpentine sometimes I look at it with some grief. Audio-CD's are a dying format. CD Players are bulky big and no one is buying them. Portable usb-storage players are way better, they fit in your pocket, you can shake them and they will not stop playing and you can even install Linux on them!
However these things take time, I mostly use it to create Audio-CDs to my girlfriend, so that she can hear them in her car ;) I have never used Serpentine for myself, there I said it! However if she, or some of my friends, need it it's a must-have application on my desktop, I won't install K3B (and kdelibs) just for that.
The first reason is why I don't think it's the right application to propose to GNOME. Pygtk needs a killer app in the desktop, but Serpentine is not that one either. Disclaimer: These afirmations are all based on my thought, don't start plotting around them.
With Serpentine's latest release I see it this way: the features are mostly there, the GUI is mostly there, which leads me to a new stage: I've started maintaining Serpentine. In the end it just feels good.