Sometimes when I'm adding tags I realise that I have selected them in the wrong order. For example, I usually add People first (in a particular order of people) using the 'people tags' and then I add 'normal' tags after the names.
If I am writing a long entry in my journal involving lots of people tags with lots of additional tags too it can look a little messy if I have added the tags in stages. It would be great if I could click/tap and drag and drop to rearrange the applied tags to an entry.