Retroillucid, I think all four games you mentioned would be instant purchases for me. Certainly 3 of them. Thanks for your work!
Ax, I pretty much agree with you. I would generally rather have the closest to the real thing arcade port or the best version otherwise available, and play that one pretty much exclusively. For example, take Moon Patrol...I really enjoy this game and like every available version I have played (for the most part), and I own a couple versions, but the best version to me is the arcade-perfect version available on PS1 (Midway's Greatest Hits Vol. 2).
HOWEVER, I can't wait to get my hands on Space Patrol, because it is not only an arcade port but BUILDS on the original with additional backgrounds, new play mechanics, etc. I would purchase any and every homebrew that actually builds on the original levels and/or mechanics while remaining faithful to the arcade original.
Relevant to your point, the upcoming DK for the CV will be by far the closest to the real thing ever released, surpassing the NES version, from what I understand. So that is a must purchase for me.