I knew there would be a good reason to subscribe to your build. I never would have thought of a bracket for the injector tubes. The added bonus is that it’ll be covered up by the ribbon cable. Excellent!
It's definitely a worthwhile addition.
I can't tell you how many times the injectors and tubing on my old pack got bumped or snagged at events, so its great to have the extra strength in that area.
Not that it was my idea mind you.
Here it is on the Super hero pack from the Sony lobby pics in the refence section.