I have't played a game with the new spawning costs (3 for uncommon), due to weddings birthdays and the looming threat of christmas (real life sure gets in the way this time of the year
). HOwever I think that they are slightly off.I'll agree that a carni or exocrine is worth 3 spawning pips. However I don't think the same could be said for biovores or zonathropes. They are good, but not that good.
Therefore I thought up a nw spaning points system which I present here.
common/ spawning cost
uncommon
infantry 1
Light vehicles 2
armour vehicles 3
War engines 2 per DC