You know that I'm a huge fan of IDEA, and am very greatful for all the hard work and effort you put in both developing it, and discussing it on this and other forums. But...
About the new splash screen...
This isn't a knee-jerk reaction to change. It really does suck. I was showing the latest build to a client on Friday, and I found myself opening notepad over the top of IDEA so that they wouldn't see the new splash-screen. It's an embarrasement.
It looks like it was done by a 12 year old kid with a copy of a 3d editor off a magazine coverdisk.
Further, I'm British - I suspect a lot of your users are. Nationally we have a fondness for this ancient monument. Your poor treatment of is little unkind. In the current economic climate you may want to consider do everything possible to bolster your image.