[matke]

That's understandable.

Concerning Bingie Mod already having a custom search, that function can be left for English users to use if they want to search English content, for people using other languages, they can opt to use the Global Search addon instead.

Concerning how to add custom views to the addon, here is the post where the author of that addon talk about how simple it is to add a custom view to the addon. He said "
... it might even be as simple as just including the views you've already created for the video/music library in the globalsearch xml file."

Here is the link to the post if you are interested. 

https://forum.kodi.tv/showthread.php?tid=326903

It doesn't matter which search you use when the fonts we use in the skin don't support Arabic letters. One of the plans in the future is to provide support for as many languages as possible, but I can't promise if it will ever happen. For now it remains as it is.
Regarding global search, it's not exactly as you say, a few lines of code and that's it. There is simply no need to do the same search when there will be the same problem with languages not supported by the font, and bingie keyboard in bingie search is a special story.
And I think the current look is quite ok as an alternative to custom search.