Mines
Lvl 1 is about half the strength of a current lvl 1 mine and u get 100 pp
Lvl 2 a normal lvl 1 mine now giving 140 pp
Lvl 3 is a little stronger by like 5% of the lvl 2 mentioned above and gives 180 pp
Lvl 4 a lvl 2 mine in the current set up giving 220 pp
Lvl 5 halfway between a lvl 2 and 3 mine currently giving 280 pp
Lvl 6 slightly stronger than a current lvl 3 giving 360 pp
Lvl 7 a current lvl 4 mine giving 440 pp
Lvl8 halfway between a lvl 4 and 5 mine currently giving 500 pp
Lvl 9 20% stronger than a lvl 5 mine now giving 600pp
Lvl 10 double the strength of a lvl 5 mine now giving 700 pp
With a little variance of course this would give more alliances chances to occupy a mine and get a bit more pp for every alliance by bringing weaker alliances in to low lvls and high alliance into higher lvls so average alliances doesn't take all low mines and high alliances all high mine