Not sure, need to look more at the code.
I read that as "I will contact you, when I have detailed information"
I certainly want to have the interface as less cluttered as possible.
I agree. IMO the On/Off button is the best solution in that case.
The information what factories can deliver is imho not most urgent, as generally the editor is only to be used for building scenarios and not during real games, as it will mess up the industry balance.
I disagree. Yes, the info is not "most urgent" but very helpful.
There are also users that place each factory with this editor (I do this at least from time to time). It's just another way of playing simutrans.
But zou are under considerated thus there is hope.

Chanching UI is time coonsuming, as those strings need to be put into svn and so on ...
If I would have infos about this, I would definitely help, but I haven't.
Yes, I do want this "feature" in simutrans

We could discuss the details in German, if you prefer.