Would like to have the ability to not have a tag icon at all. If I keep this setting with a blank field, there is a default icon, still.

Having the blank field selected means that when you add a tag by right clicking, no icon is selected in the pop-up.

What the game does if you add a tag with no icon, is to use his own default marker. That is the case with my mod and with vanilla.

I can't find any issue with the setting itself, so I suspect you meant the default marker, and I can't remove that one.

Is it possible to at least not type a tag Name and use still use this default tag icon?

That'd remove the step of having to pick an icon when you just want to put a dot on the map.

Also there's an issue a with an unknown signal this mod has added/removed, which adds a new category to selecting an icon for map ticks.

Scratch that last sentence. I missed when you said "Configurable default text and icon (the icon can be picked from unknown, dot, info, and color signals)" but I caught it when you said that in your initial reddit post. brilliant. you already solved it. efficient.

Now I did test that unknown signal and it doesn't care if the map tags are hidden or enabled and if this is the only mod. I don't know why it's there. Can it be deleted? When setting signal-unknown as the default (a question mark) it works fine, but if I clear the default tag icon and try setting it in after right clicking the map, then the mod crashes. (see the bottom 2 screenshots in the above imgur link)