I toyed a bit with tcz-symlinker by Curaga, and it seems faster than busybox cpio -ias currently used by tce-load to shadow dirtree in a tcz.
So, if my speed assessment is not wrong, I wonder why it was dropped starting from TinyCore 2.8, and I'm finding no hints by googling.
Maybe for the usual issues regarding ram usage/bloat of tcb?
Just curious, thanks in advance.