Some of those are actually on my list for future things. I've posted in various places that we have in the past switched up the prizes (the pet slot is pretty much always a given, we are a pet site after all and a lot of people like the slot because they don't have to spend CSC/sP on one then haha). We did bathhouse this time because I knew I'd be adding more items in there so it was the best option. We also included a forum title because some people love collecting those and don't care about other things. But the next quest-a-thon (which we have planned sometime this summer ;)) will have something else instead of forum title / bathhouse points (tbh we might do another forum title i was v close to doing sir quest-a-lot for this one hahahahah)
Just going to reiterate this from another thread/news comment: We’re not going to do tiers for quest-a-thons. That’s not in the spirit of the event. You’re supposed to be working together so everyone gets a prize, not just reward yourself. Making people do 50, 100, etc quests is honestly going to turn people off from wanting to help out tbh especially if they don't think the sP from quests + prizes are worth it.
another reiteration: we're not going to do CSC/cash shop items/etc for prizes because that would flood the system. We already give away quite a bit of free CSC through the bathhouse. We also won't do a loyalty box because of all the things included in there (especially because we're going to be adding something cool around our anniversary to them :X). I posted somewhere that we keep it an all or nothing prize thing because it's easier on everyone (artists don't have to do new art usually, us programmers just have to run a script to get prizes out at the end, users don't have to rush to choose their prize before we close a page or whatever, etc), so it's always going to be a "You get x, y, z if the goal is met" and not "you choose between x, y, and z as a prize if goal is met" type thing.
Just keep in mind that no quest-a-thon is the same! We've changed the goals before, the amount of time you have, and the prizes. Just because you have a week to get 750k done this time, doesn't mean it'll be hte same next time. During Luminaire for our last quest-a-thon we had the bonus weekend thing on the entire time in the spirit of Luminaire. That doesn't mean we won't utilize the feature again in the next quest-a-thon (we had it planned for the last day this time to do it).