Wow. KH Reform phalanx. Not everyday you see that!
Anyway, playing with a pike phalanx always seems like cheating to me. Unless the enemy have heavy cavalry, you will pretty much pwn everything. Missile troops will waste their ammo on you, and the melee troops will stand right before your pikes, slowly getting ground to dust. No wonder people have such high-experience pike phalanxes. Just try to get my beloved Romani legionaries to that level of valour. Impossible without having to merge/retrain those blokes all the time. And since retraining is rarely an option, merging will have to suffice.
The EB pike phalanx is in a dire need of nerfing. No way it was that powerful. Unless vastly outnumbered on an open field or faced with a significant number of 33+ armour cavalry, my phalanx has never been defeated. It is not even fun. I also play with Eperios since AS, KH, and Makedonia have more elites than normal units. Once again, no challenge.
All that aside, my favourite stack is the all-Cordinau Orca one with one Romani general and three Mercenary Hellenic Generals. Also includes two units of Scythian Archers. It is my only all-elite stack and I have used it against the mighty Sweboz Empire and the Central European monster stacks. You would not believe how much experience those guys have and how badly the annihilate normal AI stacks.
Bookmarks