Fixing PD?

[FrankTrollman]

Province defence costs N*(N+1)/2 gold, where N is the total PD you want.

As things currently stand, PD is variably good for different groups. I'm quite fond of Atlantis PD under water (and even above water if I have magic troops like Mindless Ones lying around that I want to participate in battles), an I'm quite fond of Caelum PD.

Some nations, notably Machaka and Man get PD that even in large numbers is only vaguely capable of defending itself from Scouts. I'm not sure if that's a balance point or just dumb. Remember though, capitols start with 25 PD for free, and there are events that will raise that by five or ten.

If you make PD too good, it will be really hard to siege people and Wind Ride will become even more awesome than it already is.

PD Costs:
1 - 1
2 - 3
3 - 6
4 - 10
5 - 15
6 - 21
7 - 28
8 - 36
9 - 45
10 - 55
11 - 66
12 - 78
13 - 91
14 - 105
15 - 120
16 - 136
17 - 153
18 - 171
19 - 190
20 - 210

Very generally, the first 10 costs 55, the second ten costs an additional 155, the third 10 costs an additional 255, and so on and so on.

-Frank