Practically speaking, I think there is no future for Zaurus since Sharp stopped manufacturing it. However, I expect my two Zauruses to have long working lives even if I buy a smart phone or a tablet. The Zaurus software I am working on can easily be ported to a desktop computer or other device.
I use my 750 with Sharp ROM for PIM, dictionaries, media browsing and the net. I don't see any new technologies coming up that would make it redundant, only faster. I want to use my 3200 as a palmtop Linux box for on the go dev work, web page editing and GPS applications; it's for this device I want a modern kernel and to retarget some applicatons. Previously we had many apps ported in the "Want it Compiled" threads but many of them were not adjusted to run nicely on a VGA touch screen or use the special Zaurus keys.
I think you guys are a little too pessimistic. Look at the phenomenal output from Meanie before he got married, one guy did all that. Or Andromeda by yonggun, Zubuntu by cortez, etc. Each time one guy. There are also the fragmented groups of Japanese developers who we don't know about; for example bucchi who developed the SDHC driver for the Sharp ROM. Between a few of us, we ought to be able to manage a small project if we set a specific target.
I was really hoping that chiark was going to propose putting together some scripts etc and bring all pdaXromii13 files together to make it easier to install the latest version with all the patches pre-applied. Or perhaps get the wiki completely up to date on how to do it. Or try to find out why pdaXrom dropped the Zaurus, maybe they just didn't have anyone who owned one anymore ? And so on. I don't think it's completely beyond us to continue where Meanie left off or to create our own distribution. If we had a small team slowly working towards it, I think we can do it (eventually).