Okay, so let me start off with admitting that, on the whole, my opinion is that this sort of thing RARELY happens; I don't see Eldar frequently launching boarding actions, with their perceived limited crews, and between their speed, maneuverability, and being made out of glass and hope, I see them either escaping or blowing up, before they can be boarded, in turn. Of course, these are not the only options, so I get to a silly question:
If a Craftworld Eldar vessel were boarded (this takes out crumby Corsairs, for the most part), what are you likely to find? If you want to up the gamut from just Guardians to Aspect Warriors, what are good ones to have on board? Many Aspects are specialized in a form of combat, and a number of them seem to be ill-advised to shipside combat. It might be a bit to enclosed for Banshees, certainly for Hawks. Fire Dragons are great, but their guns might be foolish there. Reapers are long-range, so maybe no. This is starting to smack of Scorpions, Dire Avengers, and Warp Spiders. Opinions? Could a Dragonship, such as the Sword of Elissar, have defending AWs, only Guardians, or would it just have to avoid being boarded at all costs? Partly I ask because players have a tendency to think, and be creative, at least when the GM wasn't hoping for it. There are plenty of upgrades for HUMAN craft, but since the players don't fly Eldar vessels, I'm not sure what all the Eldar could do to avoid crafty PCs from boarding them, and if they are just screwed, at that point.
I figure Eldar also do often raid Imperial ships. Is it just strike and obliterate, or do they come aboard to take stuff? DE of course take people, for their torture entertainment, but CW and Pirate Eldar? What would they board your ship with?