Why not PCSX2 Team changing the gui for controllers like this one as shown in RPCS3 Emulator.
Its difficult to configure and irritating.....
LilyPad is a plugin, PCSX2 uses WX as a GUI.
RPCS3 uses QT which is more accessible to change stuff and they have more people for UI/UX.
Besides it got all the options already in there, can you tell me what you are missing or is it more stylistic design you don't like?
Nothing is missing Everything is OK! But I want that the picture of ps2 controller should be there in center and buttons layout should be around there .
PS1 Emulator Epsxe game pad configuration is also better as we compare it to pcsx2.
I Think Epsxe may not be programmed in advance coding language as compare it to pcsx2, Finally I suggest that gui should be improved so that it should be easy to understand and it looks and feels Good for users.

It looks like this on Linux, I guess this problem is lilypad only?

yeah just lilypad.
Given the ongoing work with merging plugins and redesign, I'm going to close this for now since the GUI will possibly get poked at some point in the near future.