One of the problems that Mastercard never had/will have is introducing gambling codes like SPV into the protocol. Imagine being known as Mastercard, "card for the gamblers"
Yeah ofc, I'm pro-sv too, but for "minor changes" it's ok I think
Yes, you are talking about code changes, that's fine, for optimization, bug fixing. The other word is "protocol changes" these would radically change the incentives of the coin.