As an owner of a white rucksack, I don't agree. Even if these added effects are "minimal", I think that the uniqueness, cosmetic advantages, and high prices are enough. Nothing is warranting an immediate change on those rucksacks. I sincerely don't believe that your proposed buff will increase competition that much, or if at all because: 1. One reason many players don't attend is because either they just lack interest or they feel that winning is out of their reach (for whatever reasons that may be) and this "mere" change you propose would "merely" change that interest level. 2. A good amount of players who propose a significant threat to GvG already have white rucksacks, thus many of those opt out. 3. Current status of the game, which is some sort of monopoly on GvG and just lack of "good" people willing to participate. 4. I don't GvG anymore, probably discourages the masses.
I think that this really is just a point of view issue and there's no best path to go on, only thing you can do is keep fighting for what you want.
tl dr; hell na nigga