Case in question: So far it seemed to me that
Wikipedia uses brackets
after article titles *only* when they are required for disambiguating
between otherwise identical article titles. Hence, there is the title
[[Cher (département)]] but not [[Haute-Corse (département)]].
I think you've picked a pretty bad example here. It's hardly a hard
and fast rule, and there's many circumstances when it's been seen as
*much* easier for the parties involved to auto-disambiguate, as with
US and Australian towns.
However, the Star Trek WikiProject has now randomly
decided that this
rule needs to go, and all articles on Star Trek episodes must have an
extra parenthesis showing what series it's an episode of, even though
most of the titles are unique as they are. Hence, [[Hide and Q]] is a
redirect to [[Hide and Q (TNG episode)]], and all links to such pages
unnessarily look like this: [[Hide and Q (TNG episode)|Hide and Q]].
This could, indeed, be a problem, if there were any "rule" in the
first place that they "randomly decided" needed to go. I can't see any
problem with it, if that's the consensus of the editors involved -
they're the ones who generally have to link to the articles.
Add to this the fact that outside of Star Trek fandom,
readers aren't
likely to know what TOS, TNG, DS9, VOY and ENT mean anyway.
As long as they're covered by an appropriate redirect, I really don't
see the issue at all.
-- ambi