So when doing a model I always have the # 1 rule in mind with LODs, which is divide in half. Each level is half of the previous. And lately I've been questioning my workflow because optimization is important to me, and the way I see it there are two ways of looking at this.
A ) For the highest poly, just leave all those edgeloops, unless they are an obnoxious waste of polys. It ultimately isn't worth it to be going in and tying up quads into triangles just to reduce the amount of edgeloops and save a few polys here and there. it's also easier for LODs cause you can just go in and delete edgeloops and it's done.
B ) No, you should only use the amount of polygons you need, cut what you can, a lot of triangles are fine. LODs don't matter that much cause programs can practically do those automatically anyways.
I'm not really sure which is the better way, I know in the past B is probably the better option, but with modern engines nowadays I'm not so sure. Hopefully this question makes sense