most sessions in the uk are to be honest not that great in terms of the music itself. they are great fun admitidly and I play in them myself. session musicians are playing dance music mainly but you end up with a mashed up tune, played too fast, with no harmony and devoid of any real sense of rhythm that a dancer would recognise.
I strongly support the idea of including an acoustic bass guitar in the playing of dance tunes and belive it could make a real postive contribution to their quality and could revitalise the washed out versions we so often play ourselves.