The Pope doesn't hire mercs, there is no point. He can only build units.
Oh, I already added a couple Swiss Pikeman mercenaries to Latium
Anyway, doesn't really matter then

The starting units are changed, so he won't start with pikemans in 500AD
I was thinking, now that we changed the name of the jewish wonder to Kazimierz (as it was intended), why not readd the Temple Mount as the normal jewish shrine?
Jerusalem could use the culture boost, also the small extra income from those few jewish cities across Europe is still nice
A couple extra reasons for the player to want to keep Jerusalem
We need new art, button and movie for Kazimierz anyway - this way the old ones will still be used
Also, does anyone know what's the reason behind the Triumphal Arch replacing the National Epic?
Was there any special reason because of the mechanics it triggers? Or why isn't it a separate national wonder?
Oh and we need new button for Triumphal Archs too - currently they use the National Epic's