One problem in FoG at the moment is the "better armour" + POA in melee.
This has a huge and unrealistic effect on the relative effectiveness of troops in combat, which I don't think is supported by examining the historical performance of troops.
What problems does this POA cause?
1) Creates unhistorical differences in the performance of troops based solely on equipment. This is particularly noticable with protected and armoured troops in the Classical period. I don't think there is any basis in historical research for thinking early (armoured) hoplites were significantly more effective in combat than later (protected) ones, or that Seleucid Cataphracts were more effective than Alexander's Companions.
2) Has a strong effect on the playability of troops in FoG. Players will almost always choose armoured offensive spearmen over protected offensive spearmen, as their game performance is so much better. There is a point cost difference, but it does not offset the huge difference the armour POA makes.
3) Causes troops' armour to be graded inaccurately in order to support their historical melee performance. A good example of this is Macedonian Companions. Troops wearing metal breastplate and helm, unshielded, riding unarmoured horses, and yet they are graded as "armoured" when clearly "protected" would better describe their equipment. However, if they were "protected" in the current rules they would no longer be effective against historical armoured opponents (e.g. Persian Saka heavy cavalry). Grading Companions as armoured makes them unrealistically resistant to enemy missile fire. Another example of this problem is the later Seleucid armoured pike-armed troops - because the armour POA is so important, these have to be graded as protected to avoid them being too effective against in-period opponents.
Proposal: replace the "Better armour" POA with the following:
Better armour: + : If net POA from all other factors is – or worse, unless enemy has Heavy Weapons.
We toyed with something like this for FoG:R, however, didn't really have time to look into it enough after it was suggested for that due to timescales and other rules things that needed sorting.
Personally I think it has some merit.