Hi,
I saw the recent activity and became inspired to do some tweaks and mods. here are some untested ideas.
Pike (phalanx)
A phalanx is a group of 4 or more like heavy infantry. These units are all armed with pike. They may be of different grades but they must all be heavy infantry armed with pike. So long as they are meleeing from the front, they get a +1 in melee combat. They lose the +1 if the group falls below 4 stands. they also lose the +1 while they are flanked or surprised.
Skirmishers
Taking ideas from another poster, here are my thoughts on skirmishers. Once per turn, a skirmisher may evade. They automatically fall back 1 move when contacted by an enemy. The enemy may advance into the vacated space but must stop there. If they are contacted again in the same turn by another enemy, they may not evade and must fight the melee. Skirmishers may evade through friendly troops.
Historical note: The this tactic is exactly how the Spartans dealt with peltasts. They would advance there younger lighter armed hoplites and cavalry in close support in loose formation to run off the peltasts. The cavalry would charge and run the peltasts down.
Pilum, Agnon, Throwing Axe
I like the idea of the pilum doing a charge bonus. Instead of adding a positive modifier to the attacker, make the modifier a negative to the defender. this will give the same chance of victory but a greater chance of a slaughter. Give the Pilum etc a -2 to the enemy combat factor.
I would make Javelins short ranged weapons similar to bows with a range of 3".
That's all for now.
John