What you need is the two-click method.
So named from
this post by Machinist.
Basically, you need a separate folder structure for your add-ons (such as RW&A).
Put it on an external disk because you reinstall Windows often.
Then when you reinstall TS2015, or when you "Verify local files", or as often as you like, you run a script which will reinstall all your add-ons in a few minutes. Machinist provides such a script in his post.