Harry,
It would not be wise to do it on the first click of the tag as access to the tag pill dropdown is important.
I have a small set of macros that extend the "tag pill dropdown". I could make a variation that looks for say a "redirect" field in a "tag tiddler" and displays that in the "tag pill dropdown" for which a click would open the tiddler.
Perhaps the redirect field like this [[Congressional Black Caucus|List of all Congressional Black Caucus members]]
So for the CBC tag click, and you will see "Congressional Black Caucus" and a click would navigate to [[List of all Congressional Black Caucus members]]
What do you think?
Tones