For this kickstarter, it sounds like a fine small project for Kerberos to try out crowd-funding, and it's not like you'd be out a terrible lot of money if you sent them $10. (I don't really enjoy roguelikes, usually, so I probably won't be doing so myself)
On the subject of SotS:
I own and enjoy SotS: Complete (actually, Ultimate plus Argos Naval Yards, bought it on Impulse back when Stardock still owned them), and purchased it after the last expansion came out (when it all went on sale with a combo offer). Personally, I think it's great. Now, I haven't played SotS II, because I was properly paranoid and didn't pre-order it, and I don't generally ignore reviews and friend-game-buyers who say "Game is buggy and unfinished!", and I don't generally pirate games to try them out either.
If at some point they succeed in making it better than SotS: Complete, then I may get it during a sale, but I would probably still wait until the first expansion is released (or later).
What have I pre-ordered in recent memory? Borderlands 2. Deus Ex: Human Revolution. Skyrim. Skyrim was kind of iffy, it needed another 6-9 months of patching to be good, and I ended up playing through it on my XBox 360 (It just works) instead of the buggy crashy pc version that I had pre-ordered. So that one was probably a mistake.
Given Paradox's history of forcing developers to ship games before they're ready, and Kerberos' history with SotS I (not fun initially, from what I've heard and read, then patched and expansion'd into awesomeness), this outcome was a definite possibility (enough to make pre-order very risky). Without an additional source of money, such as expansions or DLC, I would expect Kerberos would likely only be able to fund patches for so long (unless Paradox is funding them, and then I would expect them to cut them off as well). Looking beyond SotS: The Pit, a crowd-funded SotS expansion could result in more of the revenue reaching Kerberos since it cuts out the publisher.
As long as SotS II is inferior to SotS: Complete, I don't see why anyone would feel "compelled" to play SotS II instead. For comparison, nobody should have felt "compelled" to play Master of Orion III just because it existed, when Master of Orion II was superior in every way that mattered, but MoO III was far worse and never got fixed by the developers. Infogrames (the publisher) allowed (read: funded) two post-launch patches and then dropped it like a hot potato, and it was left up to modders to try to "fix" it. I don't know if Kerberos is putting their own money into post-release fixing/improving of SotS II, or if Paradox is funding it, but either way somebody is funding it, it's not going to last forever because they can't afford to do it forever, and I'd say at least Kerberos is getting it improved instead of just dropping it.
(And nowadays there are better games than MoO II - depending on what you want, such as SotS: Complete. The AI in MoO II is incredibly bad at dealing with players using strategies which it does not understand, and it most definitely does not understand the concept of fleets composed entirely of ships with boarding pods and tractors or transporters, capturing all its ships, flying them home, and disassembling them for their technology.)
(I have no idea what Fort Zombie is, I ignore all zombie games because I have been tired of zombies for years)