Well, I would have to disagree with you too... I know big backpack is very popular amongst the usual player, but, and I have already said this quite a few times, that a bigger backpack destroys the need for things like the donkey or helper survivors... Which were initially the all point of the mod...
We did get sidetracked from this goal, so what we did admit doing was increasing backpack slightly ESPECIALLY if we can make it craftable or locked behind some skill set. Some of the team members would also like to see this, so it IS on our wish list... But clearly not as a urgent priority, considering the complexity.
As a personal note I do LOVE having to make decisions on the run... Do take this or that? Oh wait, I have no health and 10 zombies on my ass, what do I do??? AAAAAH!!!!