Basically, I'm going from max t4 to t5, and it's expensive as ... Chocolate. That's right. Anyways, I was wondering why people like to have around 400b In allies instead of buying 16 colonies. So I was just wondering pros and cons, stuff like that. And yes, you get your little bonus for selling an ally, but it's very minimal unless your above 75b, which takes a while to sell unless you get lucky on finding a good ally.
400b in allies in either for war, for show, for bfa. As for the stats, at T5 there is no doubt that buildings will give you more stats for the price of 175b. But it's more arguable for the HF buildings that don't seem to have much pf a stat increase when upgraded.
Once you be hlbc, buy 8-10 hf buildings and then just buy 2-3t in allies before going back and upgrading... But you risk getting stripped.