Was not aware of this 'feature' but I wrote my own sfs on the fly loader.My "recurring" Puppy bafoo today was adding an SFS and having to rebuild my desktop.
I modded my pups so the main sfs is at the bottom of the stack so any added sfs are layered on top..... no need for any hacks then...perhaps its those that are causing the problem...I noticed such scripts were painfully large.
Ubuntu..my objection would be the inclusion of the Out house sink with every addional app. Every possible option is enabled... this might be fine for a several gig full install but does not provide for a sleek mini portable distro.... pups seem very large compared to what I am used to and slower for it...and ubuntuness must be a major factor. Its probably why 1-2gig save files are common too.
I would suggest be a real distro and build all the binaries specifically and optimised for the intended purpose....the kernel is so why not the rest.
Once a compiling base is established its not a major job and would help considerably when it comes to compatability. Core libs could still be versioned to match such as a ubuntu release for those who want to use their packages.
Bear in mind some core binaries are nothing like the versions of the 'matching' ubuntu release anyway.... more pic'n'mix than the adverts claim.
Other thoughts are have such as puppy configure apps such as browsers with settings optimised for low profile sizes. (actually why is this not done anyway) DSL had this approach which made sense.
Another point is that by the time all the wrinkles have been ironed out from using some elses release that someone else has moved on to the next version.
As for up to date this seems a little at odds with us older hardware bunnies.... or perhaps the question is what are they keeping up to date with?..all I found with some 3 kernels stuff I tried was a whole new bag of problems with no apparent gain...intel video...linux finally catches up with the stuff...thats the only benefit that comes to mind.... but that same improvement seems to all to easily break other video hardware. But the perhaps the monolithic xorg is not such a good idea generally...one cards fix is anothers problem...I am digressing
should the topic title change ..... ha ha
regards
Mike
what am I working on..... forgot to answer... random small projects in this context .... in this instant a sulking printer...we fall out now and then.