I appreciate the effort, but I don't think many people are aware of what PGP is or what it's for. It's far more likely for them to follow step-by-step instructions on how to verify software/anything else that probably starts with importing the keys they will need anyway (which is dangerous if not scrutinized, I guess, so maybe something like this is necessary).
Those who are informed likely won't need a guide on which keys they need, but I suppose the compilation could be useful. At the very least, you should probably point out who each of them are and why people may want to import their keys. Just my two satoshis on the matter