Story, narrative and world-building is Pádraig's area, but I'll answer the game design questions.
We should definitely have A Game of Chance in UNION, I'll ask Pádraig to comment.
2. Communication between officers is something we have put a lot of effort into. We have a series of context sensitive alerts which officers can raise. For example Science can suggest a ship to target, and also recommend a system on that ship to target. An alert pops up against that ship for Tactical, and the ship is highlighted on the radar and contacts list with the Science symbol. Tactical can also request that Science scan a ship, to get more information on it or improve the lock. When Science scans a ship that ship is highlighted for the Tactical officer automatically. These are just some examples, we will be adding these kind of interactions everywhere we can.
3. Klaxons are the alarms which sound when the ship's hull is hit. These can be disabled in your options, if you find them annoying. There will be screen effects and sound when the ship is hit, but we haven't gotten into that yet.
4. Yes Science will be able to see the freq of incoming weapons, so that he/she can adjust the ship's shield freq if necessary.
5. This has been changed somewhat. We have a kind of "afterburner" system instead which gives you increased speed and manoeuvrability for a limited time.