IMHO, the ultimate feature-set would be:
* IIAB content library support, especially the new map features which rock
* wrolpi-like tagging and automatic updating when connected to the internet
* Othernet updating of content when satellite signal is available
* Toosheh extractor for unpacking files saved in an mpeg-ts on a USB stick
* Local Fdroid app repo
* Piratebox-like file drop area
* BBS or local forum message-board
* Mesh with other nodes, perhaps using NNCP or Scuttlebutt protocols to exchange messages over spotty connectivity or traveling relay nodes
If I had any software clue whatsoever, I'd be actively trying to graft all these things together.
