Suppose I am lucky I didn't have any of this (my dear wife was living in Switzerland). But I did know a few of the ECOs in the Brit Embassy, and some of them could be complete rotters. I suppose they saw so many applications that they got hardened to the emotions of others at times. Another ECO I know in another country used to seem to enjoy rejecting visas.

Just overload them with evidence I suppose. Photos, letters (good old fashioned things), emails, plans, financial situation, employers references (or references from doctor, police, clergymen). Just a thought I have no experience.