When it comes to varient covers I will only buy them if I can't get the original covers. During my "catch up" period, I bought a few varient covers due to the lack of original covers. I do have a weakness for Foilogram covers (So shiney). It is the only time I buy 2 version of the same issue so I didn't put any marks on the shiney surface. I will also admit to buying 2 copies of Fantastic Four #587 so I still have one in a sealed "Death Bag".
Now for the covers themselves I hate (like mostly everyone here) when they use the cover to promote films, cartoons or other comics. For me the Tron covers were the first reminder that Marvel was bought from Disney (Then I went to Disneyland and bought a few Marvel comics while on holiday
) Also the pirate X-23 cover was a bit of a give away.
Almost as bad as this is a comic that has 2 covers that make a whole picture. For Example the Hulk comics had a few. When Skaar first fought the Hulk you had an A cover of Skaar and a B cover of the Hulk, or you could buy the original which had both on the one cover.
Comic bags and boards. Thankfully that's something I haven't had to buy in a while thanks to my comics being delivered bagged and boarded. Comic boxes however, I am running out of room to store them I have taken over the corridor and two rooms in my house with comics.