whatcha mean "we can only"?? it's not like they can't change it, the fact that we don't gain anything brings much less motivation to actually review or rate songs...or get any attention towards them for that matter...
Even if one were to just come out and say "if you don't like it...*insert useless sassy snappy couunter*, I still want to point out that no matter how you look at it, having a level up/experiance point does add to the fun of participation...why would music and art be allowed if so many aspects are limited?
In fact, even audio advertising...I would totally not mind having threads STARTED by people wanting to promote their music with some feedback by those interested and talking about it, rather than a million page long thread (proof of that being I check those locked up topics from those who don't know the rules yet, seeing as they take the time to make it nice n cosy before the thread gets locked up) -_-, rather than jut technical stuff that's borderline boring to participate in D:.