Hmm, I would agree, but up to a point. Even if the Colonies agreed to standardize their sub-capital ships -- capship escorts, cutters, patrollers, etc. -- each battlestar is apparently designed with a different philosophy and will need different kinds of support. A ship like the Solaria is probably tops when it comes to area defense, and so her frigates won't need to provide fighter and weapons screening... but she seems to lack the long-range punch of, say, Bellerophon, and so she'll probably need Tiger-class destroyers or something else to provide that alpha strike ability. Likewise, ships like Galactica and Pegasus are more logistics-heavy -- with large numbers of fighters/pilots and missiles -- than ships like Solaria and Bellerophon (presuming that pulsars don't need massive amounts of fuel to operate, which they might.) (Admittedly, the logistics needs might only be slightly different, but they might be more dramatic, too.)

Plus, a ship's mission will affect how it is deployed. A ship like Galactica, which is mainy a fighter carrier, will be deployed differently than the Bellerophon: Galactica will stand off at some distance while Bellerophon would move in to pulsar range.

I guess what I'm getting at, is that the Saggitans, with their advanced laser systems and armor, might have a much different deployment doctrine for their capital ships than the Leoi, who look like they enjoy BIG GUNZ. Leoi battlegroups might more closely resemble those from the second world war, while Caprican battlegroups might resemble more modern CVBGs (i.e. heavy anti-air screens and an emphasis on constant combat air patrol.)

Of course all this goes out the window if the Colonial Accords mandate that all ships except battlestars be the same throughout the Fleet, and only the battlestars are different. Which is very likely; standardizing the 'mass produced' vessels like cruisers and smaller, and it will end up being cheaper for all the Colonies; plus with the apparent multi-role ability of Colonial ships in general, a BSBG from one Colony might look much like that from any other Colony. And if battlestars are self-escorting and logistically virtually self-sufficient....

This is one of the things I really liked about BSG; the pre-Cimtar universe is wide open. It can be almost anything. The one thing we know is that a battlestar is the biggest, baddest ship that the Colonials can field. (And part of me rather liked how it was the old Adama who had been given command of it, a man of letters and learning, heck, almost a mystic in his own right.)