To be honest, there has never been much innovation in the chassis department for years. There are only so many ways to work with (x)ATX form factor.
Oh, I disagree. There have been a lot of things to change in cases over the years. HDD mounting systems, removable motherboard trays, 120mm fans, doors, separated power supply spaces, tool-less, etc.
Lian-Li was one of the first companies to have a quality case on the market. They used rubber grommets on the HDD bays early. You'd never cut yourself on a Lian-Li. For a while they were better than any other manufacturers.
However, I've always considered Lian-Li waaaaaaaaaaaaay behind in the cooling department. Back in the day everybody modded the Lian-Li because it was a very slick case, but needed modification to have decent cooling. The most common mod was to either add fans on the side or cut out the dumb stamped holes in the front.
I love what antec has done with the P180. When that case came out it was a substantial move away from other cases on the market. The way the double hinged door has cooling slots on the side is great. For years, Lian-Li practically sealed off the front of their case, making cooling and dust a huge problem. Lian-Li cases are (except for this one...) very slick, but functionally they're crap IMHO and IME. This case seems to solve the functionality problem, but does so at the cost of the slick, simpleness of Lian-Li cases of the past. I'd take a P180/P182 over any ATX Lian-Li case, and cooler master has the best eATX cases I've seen.