I think the 36 reset timer is spot on. I've only missed one leve reset since the game started (was on christmas day) and I play on average 7-8 hours per day. If they were more frequent I may always have leves but I'd also feel the need to do nothing but leves all night every night to optimize SP gain efficiency. Sure, there are times where I carry leves across to do during the next reset before picking up more, and there are times where I've run out of leves 24 hours before the next reset, but that just frees up time to go do other things in the game.

I could understand how it might seem like a long time between resets for people doing their leves solo since you just do 8 leves and it's done in under 2 hours, but when you get a group together and go do leves for 2 camps (e.g. Broken Water & Halatali) with all the linking and additional leves (pretty much doing every leve available for the camps every reset) it can take 5-6 hours just to do 6 of your leves along with everyone elses. So 2 out of every 3 days it takes 5-6 hours to do 6 of your leves, with the 2 other leves to fit in when there's time for somewhere else.

If anything, I'd rather see the reset timer go to 48 hours than 24 hours.