I'm not sure if I will be as specific as that, but adding custom plugins for the site is a long-term goal. Otherwise this can probably be done via the editor itself (in non-sanitizing mode). Another goal: I hope to make the editor sanitizing switch runtime selectable
This is planned, medium term. Also file uploads are coming soon
This is interesting and probably not too hard to add
This might be a long-term goal, so far a wiki-ish (everything under one path) arrangement is all I have really thought about
I'm unlikely to move from DBIC because it supports a wide range of SQL servers, so it can be the user's choice. I don't expect that everyone that installs Galileo is using SQLite. If I go to something lighter, it will probably be to a NoSQL engine like Mongo/Mango combination.