There are many features in new MyEtherWallet make me difficult, like a we must refresh page when add a custom token. I didn't find eth gas station, so i must find it by searching manual. always low response and blank while i access in mobile phone. But its give me easily to setting transaction speed. There are 4 speed in transaction Economy,Regular,Fast and custom. And you can Import or Export your transaction speed
I think the new design of myetherwallet might have some security advantages over the old design, with the introduction of some good security features like metamask, however it will really take sometime for users to get used to it