It would be nice IMO if the useslash option could completely shield the colon syntax from the UI, so that everywhere a user now sees namespace:page, she would now see namespace/page. the slash syntax is known and understood everywhere, and having the users' view of pagenames - as titles on pages, tooltips on links, etc be consistent with the URL and actual file locations, would make the whole user experience more coherent.
Note I am not advocating that DW's internals stop using the colon delimiter, just wherever the full namespace+pagename strings are presented to the site visitor.
Thanks for your consideration. Original discussion here http://forum.dokuwiki.org/post/28235
, feel free to followup there if you prefer.