To the Hotel Upgrades, I think I've got something. In an earlier post, I've mentioned that the game needs a money sink, and I've said a server room with purchased coolant would be good, as it would help Kali. However, that would also help Android, and now that I think about it, there is a LOT of things that it could expand into.
1) It could help Kali, as designing robotics is always easier with more processing power.
2) Android could use it, because she needs a lot of computing power, explained in her story.
3) Lin could use it, it could help the Owl Clan by interfering with the long distance comms of the soldiers that try to bully them, it would be possible to remotely check on the robots defending them.
4) Lucia could use it, perhaps her story could develop towards her being good with hardware stuff, so this could become her domain.