There’s a post about Streamlined (aforementioned on this very site) over on the Rails blog that’s generating quite a few complaints. Some are misunderstandings about the capabilities of the framework itself (which can be remedied by more complete documentation) but the majority are about the poor visual design. Let me reiterate that the Streamlined guys are well aware of this deficiency and realize it’s something that must be fixed for wider adoption. In fact, they’ve made an open call (at RailsConf I believe) for designers to help them out in the matter.
So, if you’re more of a do-er than a whiner, get in touch with them to help out. (and nobody likes a whiner)