RE the original post, not sure if somebody has said this yet or not and I know it's a bit late so the OP may have already reapplied (I didn't read through all of the pages to be honest as I'm just at work at the moment), but to combat the issue of the ECO saying that there's no reason they can find that he cannot move to you, you could right a cover letter of sorts. That's what my husband and I both did when we applied for my initial visa 3 years ago now. I know some people find it unnecessary/overboard, but it didn't hurt our application and I felt it gave a bit more background in regards to the legitimacy of our relationship.
Neither of our letters were very long in particular (1 page max) and we tried not to repeat the same stuff but we basically briefly summed up when/how we met, what we went through since then, how often we saw each other and what we did in-between times when we couldn't, why we want to make the UK our home (for us, it was that he had a stable job, property, etc. and I was just working retail and living at home so had far less to lose by moving than him), and finally what some of our future goals together in the UK are after I settle in (buy a bigger house, me start a career, get a puppy, etc.). It wasn't every gritty detail, just enough to give the ECO the understanding that we had actually talked through this and set future plans/goals for ourselves. In my husband's I think he also included how he intended to look after me in the UK, etc., but I can't remember now.
Obviously I agree that it was the missing documents that are probably the biggest factor in the rejection, but the spousal support letters I think helped complete the bigger picture and tie together the plane tickets/photos/chat logs.
