[Tagging] Vote / Opinion poll about history=event

[John Smith]

Even if historic=event is removed from the wiki, and even if
historic=battlefield is removed I doubt it will stop people mapping
these locations, they are important to people, and people have already
shown that there are physical places that can be mapped.

In fact the only thing that will be accomplished by removing
references on the wiki is people will use multiple key/value pairs for
the same type of object because they can't see any other values that
are already documented.