although this thread doesn't belong here, in Android Development, and should be in General or Q&A, it is a VERY good question...
For this device (T300T) I have noticed a GREAT improvement in performance. I read in the Nexus 5 (hammerhead) forums that F2FS mainly improved write speed over read.
I read a good deal about Flash Friendly File System, and learned only that much without trying it. I am not always in the mood for doing more research than necessary. . . I learned how to convert to it, how to restore back; the errors that occor and how to correct them; the potential dangers; and then i re read the instructions and the forums regarding them.
On my Nexus 5 I'm amazed at the backup speed in TWRP and have found great performance enhancement, though its a Nexus 5, so its quite difficult to "feel" the difference unless you mess around with your device a ton (kernels roms OC etc) and THEN switch to it.
with this device, I have noticed a near-night and day difference since switching over. All I did was back up my data/media to my microSD and format using GEASS's provided recovery and flashed CM 11 back on and flashed Hardslog's grimlock kernel and then gapps. I used nandroid manager to restore my apps from a nand i made b4hand and copy and pasted whatever files I wanted on my tablet (which were few) internal memory.
Voila! my tab is sexy again.
Not sure about the whole F2FS All thing (reformatting all partitions to f2fs) its mentioned more in the hammerhead forums, and have read mixed reviews.
but its definitely worth a shot if youre not afraid of doing a little bit of reading and a little bit of dirty work, as it is quite beneficial on this tab
the end...for now