Outside of the raid, once you're a certain light level it is really easy to solo everything. Well, maybe not Fallen S.A.B.E.R so easily, but still doable. I have all three characters at or above 310, and I have only been through Kings Fall once, and I have only taken part in one Iron Banner (Rift, was good). Sorry I haven't replied to everything you wrote about, but I had to stop reading because your post is just one big wall of text.