Also, the specialists used shouldn't be exactly as attested, otherwise one would need catapult operators for somewhat small ship types, for example. That's why in the naval combat system I proposed I moved those thresholds up, while lowering other things like number of catapults or garrison slots (otherwise one would quite quickly reach hundreds of embarked troops), the latter of which I didn't even specify and, as with other details like which specialists would correspond to which ship types, is open for gameplay recalibration.

Could you briefly explain how it works so it's included in this discussion? (Also, I'll play DE after I'm done going though all civs in vanilla, so won't know for a while :P).

As I said, the initial implementation should be simple; we'll see how it goes as we test it. That's how the data capture system was implemented—simple. Then we'll see what else can be done. The first layer of implementation will be interesting...  

Of course, it should come with all needed. I was referring to the diagrams you showed, seemed too complicated. The only UI additions should be numbers (maybe as a bar, like capture points right now) and icons indicating what is present and what is absent. A very fast example for a Triērēs (after doing everything I realise it says Tetrērēs, but the game represents them quite wrongly as Triērēs anyway, just with sails set) to show some ideas: I've added, on the right of the sword and shield, very preliminary icons for the trierarch, helmsman (low quality ancient rudder), rowing master, and bow officer, with the latter having died in some recent engagement. On top of them, capture points are not used any more, but the 170 rowers and 24 deck troops. On top of that, icons for the shipwright and purser specialists, and the piper should be there also for a total crew of 201 (and there are 3 extra embarked units). I'm just testing possibilities, not sure what the standard should be, maybe all could be on that higher placement (around 9 icons seem to fit there), or maybe on the lower one, but with smaller icons. Maybe all specialists could be included for each ship type, and only the absent ones shown, with a red cross. The simpler the better I'd say.

This was the most eastern archer I found. He's from Cyprus.