ok, playing RTR 5,2 now. and boy does it suck from time to time. it takes two velites in two salvos to rout armoured elies. 3 died in second salvo. other two died in rout.
pleae keep it balanced, and make balllista's and scorpions ( or whatever your version will be) kill them at ones.
make archers and peltast deadly, but not that much, keep it balanced, but i'm am VERY confident EB will manage to deliver.
also, elies were primarily a scare-unit, or a counter-cav unit. so if you weaken them vs soldiers, try to up thsoe other two.