I think that the solutions from this thread boil down to four basic types:

1) Put most of the system in the big flash and manually selected files/directories in the fast flash (Brainstorm solutions #1 and #5)
2) Keep optification, but clean it up so that packages end up completely in /opt, without touching rootfs (currently, optification places some files in rootfs and some in /opt) (Brainstorm solution #2)
3) Put the whole system in the big flash and use the fast flash as an automatic cache (Brainstorm solution #3)
4) Don't run Maemo, run Debian (or something else) in a chroot

Of course, a fifth option is that no solution is needed:

5) Optification is not a problem, the systems work well and we have enough space in the rootfs as it is.

Some personal opinions of what I prefer after the discussions in this (and other) threads:

Out of (1) and (3), I believe mostly in (1), since I don't believe that automatic cache schedules will be precise enough to make me happy. However, to make (1) work, we need to figure out precisely what files/directories really need to be in fast flash. As an illustrating anecdote: If you move /lib/dsp to the big flash, the phone will still work fine, but CPU usage will go through the roof. Titan has done some nice work linked from Brainstorm Solution #5

(2) looks nice and clean, but I suspect that there will always be apps that need the performance of the fast flash, so reserving the fast flash only for the system is a bit too much of a limitation

I don't like (4) very much; I want to run Maemo, not Debian. If some Debian apps can easily be made to work under Maemo, that is a bonus. I don't mind if they are a few releases old (like back in Etch). Heck, I am still running XP on my Windows box at work, and that is a lot older! The main point is, I don't want to be running two different systems at the same time.

In my opinion, (5) is plain wrong, as seen from the large number of users that continue to have problems with limited rootfs space. This fact alone makes (5) wrong and is my main reason for starting this brainstorm.

Please go to the Brainstorm and vote for your preference!