Definitely - can't have too much of a good thing. Killerfish are at work already on the next game but there is life in the old AF sea-dog yet. ASW could do with a few realism tweaks (WW1 or WW2) but gun battles are what AF already does best and some Hochseeflotte -vs - Grand Fleet action would be...well, grand.
Yes, Atlantic Fleet WW1 - North Sea Fleet?

- would be good. As in WW2 would be Mediterranean Fleet (add Italians and French and a two-way tonnage war) etc etc. Be a pity if the potential of the current game isn't developed a bit further.