We will definitely not be adding the Epee as an alternative option. You have to consider, we didn't choose the Stiletto because we think it's a better fighter than the Epee (...we don't). We chose it because it made sense for light fighter squadrons from Gemini to fly Stilettos. Similarly, we won't be adding Wraiths, Morningstars, Broadswords, Ferrets, et cetera, et cetera. There's just no point having a hundred different ships available for the player. It makes our job of producing well-balanced missions incredibly difficult, and it doesn't actually make the game any better.
But, in regards to more ship selection using the currently available ships - yes. You can expect more missions offering you ship choices in the next episode. In one or two situations, it's likely we'll even offer you a choice of three ships in one mission (don't take this as a certain fact, because in the process of mission balancing, we may ultimately decide to stick with only two choices - but if there are three ships to choose, the choice will be between the Rapier, Sabre and Crossbow).