the boii and luigiones seem too big imho they´ll probably just start with 1 region (well maybe not the boii they where a powerfull confederation able to sack delphos but then again we don´t know much about their political unity )

also the arverni and eduii are probably in the same place (altough there´s that endless debate about how strong was the alliance beteween the eduii and that tribe of northern italy and if they should be included)

the lusitani and sabah and sweboz will not change so you can add that in

you might aswell also add in the eremus regions (including the one´s in pict territory)

ptolomaioi and seleukids and pontus and hai and saka and parthians and baktrians will probably not be changed so you can also include them already

and ofc \0 the arevaci don´t forget the arevaci