It's great, that com_redirect comes as part of the core package, but unfortunately it is imho lacking features, which can make it complicated up to a level of not usable in production environments.

Suggestions:

• Add Feature to ignore certain and/or all URL (GET) Parameters.
  Currently http://mysite.com/?aid=a and http://mysite.com/?aid=b will be counted as different URLs. This can be very annoying, since it will not only clutter the logged URLs, but also leave you with no way to create valid redirects, if you have visitors coming in with these.

• Add at least basic wildcarding.
  Quite often you want to redirect a whole (virtual) subdirectory to another one, e.g. /blog/* to /newblog. In it's current form, you'd have to create a seperate redirect for every /blog/whatever URL, which is simply not feasible, let alone the cluttered list, if your old /blog/... url contains a few hundred posts.
  Advanced (PREG-compatible) wildcarding would be even more awesome (e.g. redirect /blog/([a-z]*) to /newblog/$1).

Best Regards