I have always made my blocks small and thin... The secret is block volume vs. internal surface area.... that ratio is what makes a block's performance good, bad or ugly.....
I prefer to go for all out 100% maximum performance, looks sometimes get in the way of that... not that looks are not important.... I prefer to think of it as the MCLarenF1 Syndrome..... you don't need to look faster than a Viper, to be able to kick it's ass.