Indeed. Snubs can be accepted as being scouting area for future advanced, deeper into Sirius, however, cruisers and battleships should not be seen far away from battle taking place. So, for cap ships, Leeds is your limit. Conquer it, to move on.
As long you keep it well within role-play and reasonable with Gallic lore, it's fine.
Personally I would not mind seeing a battleship/cruiser somewhere in Magellan acting as a base for scouts/raiders but it's way too much if you use said flagship for throwing it against first LNS in California for random pews and giggles.