Blah. I need another few inches on my Potions essay to really round it out well -- but my hand and my brain are no longer working at all, so I'd better hold off til tomorrow morning. Otherwise I'll honestly end it by writing,

'And that's all I've got to say about that, so there. Happy?' And I'm pretty sure Professor Slughorn wouldn't take that well.

From what I know, Mr Collins is someone that used to be sweet on Aunt Narcissa, and so he probably isn't anyone of consequence, just a hanger-on who tries to be one.