No need to buy a new case if I can't find one that really gets me excited. My requirements:
1) Removable motherboard tray
2) Height of front I/O must be no lower than external 3.5" bays. The Zalman GT1000 is the perfect example of as low as I can go. This pretty much eliminates most Lian-Li models.
3) Front I/O must include IEEE1394
4) All air intakes must have one of the following a) a fan mount b) a metal grill c) a removable filter
5) The motherboard tray must line up with I/O panel (I'm looking at you, Antec P160)
6) Any fan that comes with the case must be user replacable (I'm looking at you, Silverstone TJ-09)
7) Must have at least 4 5.25" bays and 1 3.5" external bay.
No panel or door over the external drive bays
9) Does not come with PSU.
Icing on the cake:
1) esata
2) air filter
3) handles
4) wheels
5) aluminum (can be modded to add wheels and handles)
6) A pdf user manual that is searchable
7) no windows