I say play what u like, not what peolple expect u to play and furtheremore i think it's up to promoter to put u in a line up where u belong and where u can make your set closer to artistic one.
I think if u play what the crowd wants (for instance just big dancefloor killers) than u become nothing but a cheese commercial motherf***** and that's where underground stops, if we can even talk about techno being underground these days. 8)