So, I found out a few days ago that the v-day quest that helps noobs out with 800 exp boosts and gives fame isn't possible with 4 slots. I think I'll have to very carefully consider how and when to do certain quests, or if they are even possible, before wasting time collecting stuff. This extends to the rewards, too, of course, as most scrolls are going to be completely worthless, and the useful ones have to get used up fast to free up precious inventory space. Still only level 23, so it's not too bad yet, but I could see this being pretty torturous by 40s-50s.