Seriously, what do you intent to do with all the free space you get if dash takes just 10% of your screen?
Dash is for launching apps and places; You open it, launch an item and it disappears. It doesn't stay there and waste space.
I think people have preconceived notions about Unity and Shell being bad. Just try them with an open mind and give them enough time (say, a week) and I'm sure you'll love them both.
Taking up 25% of my screen real estate for 6 icons _is_ ridiculous. I'm not really complaining about how much of my screen its taking up, I'm complaining that it's really inefficient about it. If you're taking up a quarter of my 24" monitor, show me more than 6 icons at time. Show me a search bar that's got text the same pixel size I selected for the rest of my desktop. At the very least, let me configure it to something I like.
I didn't say Unity sucks, I hate it and no one will ever use it, I made a complaint about how it stands currently.