Reading before playing it, the temples being a trade route is pretty cracked. I think something that'd achieve a similar flavor might be city connections providing a flat gold bonus. Everything else seems really flavorful and appropriate however, I'll give this a try for sure.

Seems if you upgrade the archer to a composite bowman when the movement bonus is active, it becomes permanent. But if you upgrade one when it isn't, it doesn't work on the promoted one (even though it appears to still have the promotion).

My neighbours also get the production from farms during their golden ages. This civ is really strong

Thanks for the heads-up! That should be a fairly easy fix, I'll get it patched as soon as I can.

I have a bug where settling mountains natural wonders, such as Kilimanjaro and Mt. Sinai, replaces them with irrigation canals (i assume this is the 'improvement' that give mountains the fresh water status). This causes the wonders to loose their yields, and there is no option for the citizen to work them.