It is not about buffing. It is about fixing an useless tech.
Even adjust the effects by +50% one from my suggestion or +20% one from your suggestion, basically no influence the balance too much. You still need to collect relics first if you want the benefit. Spamming the monk and constructing a castle are still hard to do in the same time.
If we are talking about the balance, the points should put between the foot archers, camels and Mamelukes.