These are things you may want to think about once you have the situation more undercontrol.
Right now you are in divorce busting mode, but at some point you may need to shift into relationship building mode. When that happens you may want to have done some reflection on where things went wrong in your relationship and what changes you can make to insure this will never happen again.
Yes, I agree, these would be great things to do once he ends his affair, and chooses to work on the marriage with you, unencumbered.