I made a post specifically about water play here. So, the changes I’ll propose will be assuming that these are implemented too.
I have 2 ideas. First, give the persian dock speed boost to dravidians, after persian change. Persians aren’t a naval civ anyway, and that dock bonus was out of place to begin with.
OR, Give ships +1/+2 ship armour in castle/imperial age as a bonus. This will give them something in castle age to work with. Thirisidai will need a bit of change to keep it the same.
In either case, remove the siege bonus and add infantry or skirm bonus damage against siege as team bonus. Infantry might be better balanced, and I prefer that vastly over the other.
Also, I really like the changes you proposed to the UT. Just doubling down on the militia line is the way to go imo. The infantry siege attack bonus will also help urumis a bit. Also, urumis should get 1 pierce armour imo, especially when every other infantry UU got one.
I said of all maps, that means grouping team, 1v1, and EW games together. THIS tells me that in 1v1s, the number is like 5%. THIS tells me that the team number is like 15%.
Doing a bit of very rough math based on ratios will tell you that the number of hybrid+water maps is 10% of all games. Higher than I expected, but not that big by any margin. Also, most of this is just nomad. Without nomad, this would actually be closer to the 1% I initially said.
Again, true, but also true in general.