So it is possible but not really worth doing as not everyone has a CECHC/E Ps3, it'd be more worthwhile to spend that time working for the Netemu solution as that is available for everyone. Thanks for the quick reply!
Well, is also because this kind of modifications cant be released as something global for everyone, as mentioned before we cant modify the size of the "config table" inside the .self so the only way to add a new config is by removing other config from the ones that exists in the official .self
And you know what is going to happen if someone releases a cfw with configs removed... there is going to be someone in the world complaining about the removal

A theoretical custom selection of configs to be included in GX emu .self are a personal preference, in my case i would delete the ones for asian games, because i dont understand anything and i dont plan to play any game from asia region
The point is everyone should rebuild his own GX emu .self with his collection of favourite configs
Anyway, the only way to do this is with a tool that automates the rebuilding of the "config table" inside GX emu .self
Time ago i was helping in the research of that "config table" structure, right now i dont remember all the details so im not completly sure if is posible to do what i mentioned before about deleting it and rebuilding entirelly, some of the configs are stored in a weird way spreading his data in between up to 3 different positions in the .self, but i remember that is relativelly easy to delete them (and relink them) to recover space for custom configs
Doing it manually for several games is a bit insane and there is a lot of room for human errors, and probably is not going to be posible to do it in a clean way, because is going to be needed to delete several configs to add a new one, etc...
I was mentioning it because this is one of the cases where the correct solution is a bit obvious, the better way to simplify the rebuilding is by deleting the "config table" completly and rebuilding it from scratch... and it needs to be made by modifying the functions in the source code of the "get_config" tool made by zar to "reverse" the format back
What the tool does is... from official self ---> to TITLE.CONFIG files
And we would need... from TITLE.CONFIG files ---> to official self
Are the same conversion procedures... but in opposite direction
