Would adding a release string loop increase your drawlength enough to require you to alter your pre-string loop setup?

Your draw shouldnt change if your anchor point(s) stay the same.

If you have an adjustable release you can make up the difference so your anchor point is the same.

by adding a string loop your it will add about 3/4" to your draw!!

If you add a string loop your draw length will stay the same but your anchor point will be further back the distance of the size of your newloop.

You can either shorten your draw length to get your anchor point back to where it was, or you can shorten your release (if it's adjustable) or you can find a new anchor point(s), assuming it's not so far back that it's causing bad form.

it will make your draw longer