WIth the impending purchase of Sun by Oracle, I'm thinking it could be one of 2 things:
1) ZFS will be killed and/or de-emphasized and/or re-licensed in such a way that Apple is not comfortable/happy with putting it into Mac OS
2) It will still be ZFS just not called ZFS anymore (either re-branded or forked by Apple or re-named by Oracle/Sun)
Unfortunately, IT is viewed a lot like the phones by most users. It's "invisible" when it does work, and is only a priority to them when it doesn't work (or they need something!)
I've found that the best way to make people happy is to effectively communicate with them -- especially when it comes to deadlines. Now I'm not saying to sandbag
If it's really burning you out after only 1 1/2 years, then you should really look at (a) your workload (b) your choice of career and (c) your work/life balance.
We don't really understand it, so we'll give it to the programmers.