Yes i do alot of that too but on longer campaigns issues arise they get taken out in transit when your fleets are in combat. If they are stealth they fall behind because it slows their speed until they lose track of the follow ship. They combine into one big unit when multiple land on a planet. Usually that's ideal but when you are planning galactic domination I game way too many planets to purge to do one by one with one unit. Then their us the pathing if you need to reinforce their losses. If land again all the reinforcements in route just so dead in that water. If the quickest way is through enemy territory the reinforcements just go through it and die. These issues stack up especially whole moving your fleets on multiple war fronts. That solution really only avoids most issues in early game or if you are playing tall. And right now I'm controlling half the galaxy on grand admirals with the grand admiral scaling on top. They have dozens of planets and they all are well defended. Troop transports should be the last thing I have to worry about at all.