I personally don not mind what type of review I get, unless it is a spur of the moment drabble or a quickly put together rough draft. Then, I would ask for some serious die-hard reviews; what's a good idea that should be elaborated on, what seems trivial to no end, etc.
I have received a few reviews with intellectual remarks and observations, and that always fills me with a bubbly feeling of goodness and love, but so do the usual comments of "I really like this, keep up the good work" or "I can't wait for more" because, as much as the lengthier comments keep the creative gears in my mind working, it is the other comments of support and praise that really inspire me to continue.
I believe it to be somewhat silly to express a frustration toward the writers (who are generally very young to begin with) who do not enjoy reading tougher reviews; not everyone is going to be an amazing writer, but not everyone is going to have the same confidence in the system as others. If you know you are not good at conveying the over all message of a story (or individual chapters, etc.), and really want to get better at it, then the more "critical" reviews are not going to be as offensive. However, if you have trouble conveying ideas and do not have a lot of confidence in yourself as a writer in general, you are bound to be a lot more touchy than the former types of writers described.
Like I said, though, I have never really had any issues with my fanfiction; I've received some tougher ones, I think, for the ones which didn't have a very well built structure or theme, but I saw that coming. These were usually quickly scribbled and not a lot of time was taken into them... kind of like my series of NS drabbles. XD *is shot for such bad writings*
Oh, and for anyone interested, you can find me at ff.net under
infinitx.