Can someone link me to that and/or the relevant page of the white paper? Seems to be mining could be used to generate check points. That was one of tweaks I had in mind.
There is no about that in the whitepaper. There is no a formal proof that coin generation is impossible, intensive search for a coin generation technique was done to have 2% annual inflation (because it's a near-optimal number) and none of the ideas let to keep the security of the system at an acceptable level. This is a well-known problem of proof asymmetry, it's hard to prove that unicorns don't exist while it's trivial to prove the opposite if you have such a unicorn. If you have an idea how to add 2% inflation, share it, please.