I guess everybody has there own thing, I agree with some of the points, but also disagree with other points.
I've been back and forth with many lines and brand, but I almost always stay with a the theme style. For example the Mail in Hot Wheels, like the fact that they do them all in the same style of paint scheme. M2 Ground Pounders, love the chase color, especialy that they stick to the same color(s). As for Treasure Hunts, regardless of super or regular, I just don't see the interest in collecting them. Don't get me wrong, I do pick them up, I'd be stupid not to, but for trade bait mostly. As for now, big fan of the Hot Wheels Neo Classics and the M2 Ground Pounders, and besides the chase, you got to have some of the regular releases in your collection, how can't you not..... some of those colors and paint jobs are sweet. I do understand that it's hard to pick up every color..... not enough room to display them.
If you just pick up chase cars and don't open them up and get a much closer look at them and display them..... I think your missing out on a lot.