If you manage to implement the phalanx (hoplite and sarisa and legio - is it even possible to get the triple acies to work in some feasible way in M&B??? - formation) and spice up the whole thingy (more varied missions, player only events, better starting character variety - I would look towards Expanded Gameplay II or Band of Warriors for the latter) methinks there doesn't take much to make this king of all mods! It's a great work, played a couple of hours more last night and I couldn't drag myself to bed.
A minor nitpick: It should be "hellenic (which means "Greek") cities" and not "hellenistic cities" (the latter being the designation for the post-Alexander kingdoms ie. Ptolemaic, Seleucid etc. and not Greek proper city-states). Other than that, playing as the Hellenes is a pain in the arse, their settlements being scattered over 2/3 of the map. I love it
Oh, missed to say this: I wholeheartly agree with Merlkir on the phalanx thingy. To make them more accurate the really long pike plus a solution about the shield, is a must.
Also, another minor nitpick, I think the gauls and the dacians are overpowerd. A tad bit.