Under Louis cheesy tutelage they can go from decent to cheesy as Mel B stated. Louis wrecked MK1 a few years back and can strike again. I love the fact we have a mixed group. However one day you can be Clean Bandit or Black Eye Peas the next you're Steps or SClub 7. They really need to think about what's in the charts and what sells, they need to be less smiley wiley and a bit more edgy as Tulisa pointed out. Also brunette guy and stunning blonde girl have best voices.
Picking Elvis and Beatles in a week where the theme was no 1s was stupid as they should always veer towards modern ie 2013 onwards if they theme allows, next week is 1980s so they have missed chance to do something ueber contemporary, unless they do a modern twist etc.