Hi,
about the fonts: I think it's because either the font file OR the configuration file isn't loaded at map start. If you set menu font to some diferent, it won't change in the lobby until the map was loaded at least once (that is because the custom font is not yet loaded, so a standart font is used instead). That is the same with the LOADING text - there is no way to change it's font (so far I know) - if you wanted to use custom font, you would need it to load in the memory. If you want to load it, the LOADING sign needs to be created first.
I am looking to the text tag problem right now, maybe I can come up with something
EDIT: I am sorry, but I can't find a way to get it done. It is clearly affected by texttagfont, but after reload only. I tried replacing font, preloading stuff, changing other font settings, nothing seems to work.