Do you think they will be worth more when Fix It Felix comes out?
IMHO, nope.
I don't foresee a mass-crowd rushing to find a Nintendo cab to install an arcade-game-wanna-be that is highly inferior in game-play to any of the original Nintendo games.
If you flip this cab, you'll most likely sell it to someone wanting to restore an original game, (or Mame it...) rather than turn it into a dedicated Fix-it.
But at $70, even if you put a few hours of time into fixing it up, not to mention the material costs...how much do you think you could make of it? No one's going to pay more than $200 for an empty cabinet, even if it's fully restored (at this point, it's just painted lumber). So after the initial cost, labour and supplies, you'd probably end up making $50-100 profit.
Doesn't seem worth the hassle, and you definitely won't make your money back from that other cab...