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diff --git a/readme.md b/readme.md
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--- a/readme.md
+++ b/readme.md
@@ -73,6 +73,10 @@ Once you have selected your region, you'll find folders typically representing T
 3. Reboot the device.
 
 ### Future:
+- squashfs + overlayfs + firstboot:
+  - This implies new gpt partition table with `boot`, `system` and `userspace`, `system` has `ro` filesystem, and `userspace` has overlayfs.
+  - gpt table makes `fastboot erase/format` expand `userspace` to full size.
+- Investigate zram
 - Custom package server for msm89xx/msm8916
   - Any target specific module not present might require to be built from sources. This repo can be used to do that, run `make menuconfig` before `make -j$(nproc)` and select it from the menu.
 - `msm-firmware-loader`, to mount firmware instead of bundle to free up almost 40mb from rootfs.