Varangian reduce mercenary contract turn 6 - 4

[Badnorth]

Varangian just stays in the battlefield too long despite being a 2 turn powerful melee unit.
I suggest to reduce his contract turn to 4 .

[Endru1241]

But other mercenaries are commonly a little stronger, still costing 2 turns.
This 8 turns is one of his important advantages.
The same 2 turns costs mercenary longbowman, which takes varangian by 2 shots. And he stays 4 turns.