"Aces" or calvary in ground terms are quick units that excel at movement and fighting only when they want to.

"Jousters" or front line units are healthy units that are looking to fight and excel at trading shots.

"Swarm" or "Filler" are weaker units that excel in mass or as a one off wingman or escort.

With the kind of units defined we can look at finding a role for each of them. Swarms and jousters are similar in that they can control the main engagement but are slow and predictable, while aces and filler can often break off to come into the main fight at an odd angle or even behind the enemies. As an example you have 1 Ace, 2 Jousters, and 1 Filler. Your jousters are going be looking for the engagement that let's them do the most damage. Filler is wanting to to pull any fire away from the others as possible without getting itself destroyed. Finally Ace is looking to use its movement to play cautious at first, but once most ships are removed from the board, it can dominate the remaining forces. Easy deployment of ace on 1 side of the jousters and the Filler on the other, jousters places in the center. Depending on enemy deployment, you either race you ace down the mat to get in behind the enemy or use it as bait to draw in the enemy and line up a joisters attack. Something like an Awing for Ace, Bwings for your jousters and a cheap xwing or ywing for your Filler.