No absolutely not. Unless you mean as a way of dealing with aircraft capacity limits within the existing framework of the game. A way that could be substantially improved by a modest UI change. (It is also worth noting that most missions are capped at 8 but IIRC nests and citadels are capped at 10.)
So you have the Tiamat, the Anu barge, which can carry up to 8 soldiers which is enough for most purposes but is also famously slow. On the other hand, you have the Syn Helios, very fast but can only carry 5 soldiers. 5 soldiers is enough early on but at some point you will really be under pressure as the game progresses in difficulty. You could move 8 soldiers around very quickly by loading up 2 Helios aircraft with 4 soldiers each and moving them together as a pair. You can do that right but here is the thing. To move 2 Helios from point A to point B, we 1. select the first Helios and click on point B, 2. the game automatically unpauses so we click the pause button, and 3. we select the other Helios and click on point B. Why not just designate the 2 Helios as traveling together in a pair and click on point B once?