There are numerous tweaks, additions and changes still needed that I know of and I will look addressing them in time. Some of the ones I can think of now are:

¥ÊFix bug, I think in postscript.sh, which could cause data loss. I haven't been able to reproduce it.
¥ÊAdd extra boot options to the installer.
¥ÊMove 'Hide stage 2 boot option' from Bootloader options to a new choice in the installer. 
¥ÊAdd code to write bdmesg to the correct location on the user's system.
¥ÊCreate final background image.
¥ÊAdd additional language support but only once the English is complete.
¥ÊExtend the use of the simple WriteInstallerLog.sh script to write a complete installation log and not just an error log.
¥ Add scripting for installing to APPLE_RAID.
¥ÊAdd Rekursor's Chameleon prefpane but Azimutz version with included fix for ExtractACPI tables. 
¥ÊLook at running a script for fixing permissions at the final created /Extra folder.
...