My recomendations for a long-living case:
- With two 5.25'' bays, you won't need more.
- With about four 3.5'' bays, for the same reason. Unless you wanna make a RAID...
- Floppy? Whats that? FLOPPY IS DEAD, SO NO ROOM FOR IT.
- At least two case fans, one in the lower front and another in the mid back of the case, the front one with a good opening.
- The PSU support on the upper back; the cases with the PSU in the bottom make the hot air generated by the PSU being sucked into the CPU and the Graphics card coolers.