[Tagging] RFC - More sensible values for fountain=*

[Davidoskky]

> water_tap=yes/no already exist and I see no value to change
> from water_tap=* to tap=* 

I cannot find water_tap=* on the wiki, anyway taginfo shows 166 elements 
tagged as water_tap=* and 470 tagged as tap=*.


> I also find that you spread yourself too thinly by talking about
> ideas that you could do (but which are not done in this RFC) 
I'm asking for comments about those ideas; I'm not proposing to change 
them without previously discussing about it.

If I make a proposal it will be solely on the changes I listed in the 
Proposed summary section.


> I would tend to think of one or 2 simple proposals : 
Yes, I could split this into different proposals. I think that starting 
with tap=* will be the easiest.

Then I could make one to describe the style of the fountains and another 
one to add the generic values decorative and utility.


> for=drinking/bottle/dog/... to describe how it can be used 
I'm quite unsure about this idea... a fountain that spouts water 
downwards can be used to fill bottles, to drink and to let dogs (and 
other animals?) drink.


> at least, a namespace isn't needed (as we don't use shop:name on a 
> shop=* nor shop:opening_hours on a shop=*) 
Would simply style work?