I'm afraid I'm going to have to disagree with you. Compared to other years, this first semifinal is quite a decent line-up and it will be difficult to predict the winner/finalists. None of my particular favourites are in this heat, but I must admit that there are some decent acts appearing nonetheless. I'm struggling to think of any good acts from the heats who haven't made it through to the live semis - something I can do with ease in other years.
I wouldn't give up watching just yet - give it at least one live show before you throw in the towel.