What Fight Club case are you talking about? A quick Google showed nothing special to me. Unless you're making a fuss about that stupid one that looks like cardboard paper wrapped package (that's on a cardboard outer that just went over the basic ass DVD case), in which case, uh, you really think that's some great artwork?
There are some nice Blu-ray cases that aren't the standard packaging (I've got a Young Frankenstein one that has a nice plastic case, and I know there's plenty of others when you get special edition versions). I guess I really don't know what you're talking about with regards to artwork. Sure DVD cases had a bit bigger sized inserts, but that really didn't add much if anything. Unless you're talking about the outer cardboard/plastic covers that some had but most of those were lame and cheap as hell. But I know there's Blu-rays that have that stuff so I'm not sure why you're acting like those stopped with DVDs.
I'd take the standard Blu-ray case over the typical DVD cases (especially those fucking awful ones that have the two little latches that people just break off). The blue is a nice color, is more compact (so can fit more movies in the same space), and the plastic seems a bit more flexible/pliable, and I have yet to break one from regular wear (whereas I've had quite a few DVD cases broke literally from me popping the DVD out of them for the first time).
Most importantly, the Blu-ray discs themselves are better. And they feature larger and often better done artwork compared to what DVD offered (granted its not much but its every bit as silly as you saying DVD had better artwork because the inserts and case were a bit larger).
Actually most importantly, the Blu-ray transfers of the movies are typically much better and more true to the original releases of the movies (I'm sure there's quite a few exceptions). That's ignoring the purely technical resolution/color aspects.
And now, you can generally find tons of high quality art (both professional/commercial that you could buy and also lots of lovingly crafted fan art or even commission fans/graphic artists to make you something specific) for any movie you want. So you could buy nice high quality poster or vinyl pieces, or all manner of things (quality prop reproductions, etc). So its not like you're missing out on quality art for movies you like.