I have nothing to say about Bahuns not forming any groups. But, I totally agree with ur second theme..ie..nepali ma ekata bhanne kura nai chhaina aajkal..Sabai bhanda pahile afu Nepali ho bhanne kura bujhnu parne ho..

Dherai kabi haru le bhanekai chhan kyare sabai manab ko ragat ratai hunchha, ani sabailai katda dukchha..ani yo ke ko adhar ma kohi bahun, kohi newar, kohi madhesi or whatsoever..Anekta ma ekata Nepali ko pahichan hunuparyo..