I'd like to suggest that there be an option to the tagging of posts while writing them. Currently the system requires you to type in a tag, and eventually the serve pops up tags that match what you are typing in. But if you are like me you have more then just a couple tags (I have around 50 or so).
I currently know of one plugin that will show a listing of my tags for me to select from, but it barely supported by the author and this option if just an additional function of the plugin, not the main purpose.
Why can't WordPress just have an Settings option to "List Tags" in the Edit/Create post screen? I can already see my categories, and my understanding is that more people use tags nowadays anyway, so let's make it easier for us instead of making it like pulling teeth.
There was a plugin that did it perfectly (IMO) that was called Click Tags but it no longer works, basically just make a wide box under the current post and list the Tags alphabetically in the box.
This should be something included in WordPress out of the box not something that plugin should have to do.