i think that the new features are good, because you can upgrade anti idle mode and it will be running allmost at normal speed plus extra exp and coins, but you need to have a lot of coins to upgrade the anti idle mode...
tip for the beginners: at the beginning, earn achievements to raise your boosts, then upgrade your (anti) idle mode, depends which type of player you are, then when you have money printer, keep upgrading it till the end and then you will have lots of money :) then keep wating your money on boosts to raise your lvl more quickly
in the mystery shop it would be wiser to buy boosts, because they let you earn a lot of coins PLUS exp and it would be cheaper to buy mystery items with coins
bug: i was offline for a half an hour, but it's says that i wasn't there for 4 hours... then i earned 427 coins and ANTS ate 1% of my boosts though i allready BOUGHT ant sprayer...