I go for a classic makedonike formation, 7 units of phalangites (5 if ur facing romans) 1 unit of hyaspists on the right, 2 (3 if against romans) allied heavy inf on the right flank, 2/3 thureophoroi(or sth similar) on the left flank, 2 units of psiloi (toxotai kretikoi or spendonetai) behind the left flank, 2 elite heavies (peltastai mekedonikoi + allies) on the centre right. For cavalry i use thrakioi prodromoi + hippies thessalikoi on the left, general + lonchophoroi hippeis/hetairoi for the right depending on the situation. I tend to have a full stack of replacements/reinforcements/baggage train to replaces losses or change troop composition depending on the type of enemy i face.