If I could I would've made a thread about this kind of situation a while ago as I could see where KS could lead to.
Honestly this is a very slippery slope to go down. Shenmue 3 is one thing, but I hope we don't see the random IPs that probably could be financially viable on their own accord kickstarted because- "Why not?"
Anyway, Kojima "will" be a free agent sooner or later, looks like his project is about to get Kickstarted into the sun.
Agreed, however this might be the only way we see some of the IP's that have (seemingly) been abandoned or have been changed to the dislike of fans of the series(Breath of Fire anyone?).
One of the biggest reasons I can see more publishers using KS for older IP's/niche titles is you aren't just relying on fan feedback, comments on forums, petitions etc. Using KS requires the fans to "put their money where their mouth is" as it were. This gives publishers a more, I would say, accurate assessment of an IP's viability today as it requires a commitment of interest(money) from the customer.
A prime example or where a requested IP/game style did less than(possibly?) expected is Formula Fusion. I have seen a lot of comments on gaming forums wishing Sony would make a new Wipeout game. Yet, the KS for this finished at just under £80,000, not enough to reach the Xbox One/PS4 stretch goal.
KS could even be used for newer games to judge whether it would be worth the cost of localisation. In the vast majority of cases this would be for games in Japan that people would like to see released in English, for example: Phantasy Star, Gundam(anime games in general really) etc. I mean, hell, with the way KS is set up with different pledge tiers, I could even see publishers using it as a new way to generate pre-orders(back Advanced Warfare 3 on KS to get exclusive backer-only skins(please no)) or as a way of doing custom special editons for games.
The last point I mentioned was at the extreme end of the spectrum for KS use, but considering current pre-order culture I do see it, whether through KS or not as a potential possibility.
Yes, KS can be used as a platform to judge the viability of binging back old IP's or game genres. The question is, where will it stop?