I entered he Totsig as well as the Laurentian System Fleet Action today as RA5. I was surprised that were actually a 3 players max. The Laurentian System was very similar.
It looks like the classic fleet actions are all but deserted from level players at all. IMO here has to be done something about it, as I don't want to stick around in the lower level instances and spoil the party for the players there.