@texenthusiast Thank you :)

@KhaledHosny I hope I still have an opportunity to squeeze in one more question/advise seeking: Most often font-TeX problems originate from either TeX don't have the necessary info about the fonts (missing tables etc. ) or some fonts just don't play nice with Lua/XeTeX at all. Is there any way that we can somehow help to collect these missing information ?

I'm not of course talking about all the design related issues new glyphs etc. but if possible I would like to know how and where can an average user contribute.

By the way, I also would like to express my gratitude for all the fantastic contribution you have put into TeX world.

@percusse Thanks you :) I’m not sure I get your question, though. Can you give some examples on the issues you are concerned about?