For me, I integrated IE 11 manually once into an untouched WIM and then you keep this for future use (just don't forget to use a copy of the WIM each time you need to run WinReducer...)
Download IE11 pre-requisites:
Place the updates in D:\IE11\pre
Download IE 11.0.15
Place the main cab in D:\IE11\main
Then mount your WIM image and issue these two commands
DISM /Image:D:\wimoffline /add-package /packagepath:D:\IE11\pre
DISM /Image:D:\wimoffline /add-package /packagepath:D:\IE11\main
Commit the changes and that's it. When you integrate updates into your WIM you will probably be including IE11 updates.
You will need to change the drive references from D:\...
to something that works for you.
The process is similar for IE 9 if you really don't want IE11.