The Non-Commercial restriction is a huge mistake. Every researcher sees a useful figure, considers including it, notices the Non-Commercial restriction, and hesitates. Is my usage non-commercial or not? Will money ever change hands? Is this journal commercial because it's not free? Maybe I have to consult my Legal department.

Nobody wants to get sued.

So the researcher looks around to see what other articles are out there. Articles that don't have the Non-Commercial license. Find one of those and use it instead. Yeah, that's it.

I strongly agree with abandoning the Importance/Significance criteria. Scientific studies carry great weight - they influence votes and economies and people's lives. If somebody reproduces an earlier study, and has $1350 to pay for publishing the follow-up research - let them do it! Independent confirmation of important and crucial results has good scientific value.