I also can see the point OP is making but I think regardless of quality, I love the fact we have a large amount of styles. The style audition feature in BB 2014 is an absolute godsend! I myself was previously finding it hard to find a suitable genre/style for my songs, but this has helped me rediscover some missed gems! Midi based ones again as people have said are useful to get a "feel" or quick arrangement for a song. I have used many of the early midi styles, and even though I have to import them into a DAW and use VST's on them I don't mind, I actually LIKE being able to manipulate the midi, be it rhythm, note length, timing etc. It has been invaluable to me as I am good at creating songs but I am certainly no musician, but it cuts down the time it takes to say lay a bass track down, or a starting point for me to work from.
Creating a track may be "instant" with many of the band in a box styles, which still amazes me every time I use it

(I have been wishing for a creative tool like this for over 25 years when I first started to write songs lol) but I actually like the fact I won't always find a "complete" style, and often find myself looking for a "different bassline" or a "cool guitar" variation from another style. It's good to have to mix it up a bit in my opinion!
As much as I love lots of things BIB offers, I am quite eclectic in the styles of songs I do, and although primarily soft rock/pop, I would like some "fresher" sounding styles. But overall I really do appreciate the variety offered.
I wouldn't want any of the styles to be discontinued. I think all that is needed, like we now have, is a good filter system and the audition button
