I really love multipurpose infantry hence heavy archers that are capable of fighting on the front lines are a favorite of mine. Cant wait to see them

two small questions you could answer if you so wish:
Are they a redesign of an existing unit like the Bosporan archers or a completely new unit?
What faction/factions will get them?, I'm thinking they are possibly for Saba given thats your main area but I imagine the Bosporans or Baktria would be likely to have similar units as well.