When these things come up, sometimes I go to SO to see if if I can find analogous situations.  Then I try to think of a justification.

[Program][1], [code][2], [coding][3].  This may be a larger question of, "Do we want to hunt down and kill redundant tags, or are some tags almost necessary because they represent a massive subsection of questions?"

(trying to play devil's advocate here) It might be useful to divide all SO questions into at least one major category: coding, scripting, version-control, etc.  Which could imply that SF questions should always belong to either server mgmt, desktop mgmt, network mgmt, documentation (applies to both), etc.

I suppose that would make me lean more toward a merge than eradication.  Sysadmin is such a loaded and nonspecific term, I'd probably synonym it to system-administration, which is at least a (possibly) manageable definition.  Provided we could all someday agree on whether a "system" is a desktop and/or server and/or network and/or any "group of independent but interrelated elements comprising a unified whole".

This is where the SO analogies break down.  It feels like they actually have more self-defining terms upon which they can agree (a statement I'll guess they'd find pretty humorous).

  [1]: http://stackoverflow.com/questions/tagged/program
  [2]: http://stackoverflow.com/questions/tagged/code
  [3]: http://stackoverflow.com/questions/tagged/coding