well I just typed out this long nice response and then my phone deleted it. but short version Marauder did an awesome job of creating independent operating warships for clean fleets but these designs are not very good in fleets. or are too good. they all have tomany missile launchers for a battle group to use in my opinion.
Avalon 14
Temeraire 16
Typhon 10
So they will most likely be used in their intended roles and homes according to Marauders fluff.