Most people I know don't even have a chuch set, not even +0, 99% of players do not have an xp set. And those who does, have 170-175% xp, not 300%. You're one of the few exceptions, good for you. Anyway, after a certain level, you can get 500% bonus xp and it wouldn't really matter. 30 milion xp for one level... I still cannot believe they release this aberrant update. We know they completely ignored the pvp, which was unbalanced anyway, but they didn't even do the pve properly. The new missions give 600 xp....600 xp when you need a few million to level up, it's a bad joke.
Nobody has time to do 15 second jobs several hours a day, you not only need a very good set, but also energy, motivation, xp potions and a lot of time. After a few weeks, maximum months, you'll get bored. If you don't get bored, you should think better what the heck you are doing with your life if you spend several hours a day for years continuously doing pointless clicks with no purpose for a browser game with no future. It's not even satisfying to do 15-second jobs, at least at duel or fort you have fun.