My recommendations to overhaul the G5:
remove the AtA interface.. make the Superdrive SATA like the hard drives. this should reduce manufacuring costs as it removes the P-ATA controller. ,
(no more legacy interfaces.)
replace the SATA controller with an updated one that can support Hardware Raid
Add one more hard drive bay
optional 2nd optical drive bay
make the current superdrive , slot loading
Powered Mic port on the front
2nd USB2 port on front
2 more USB2 ports on back
1 more Firewire 400 port on back
Firewire 800 port on front
PCI-X for future Graphics cards
personally i wish the apple logo on the side of the case was lit like the way the powerbooks are. with a way to control the brightness in the control panel.
Built in Bluetooth. as standard on all models.
i think to make it more streamlines. they should be able to have one large heatsink to cover both processors. might not look as cool but would save room. for the needed optical and hard drive bays
I like the look and size of the G5
Just my opinion

remove the AtA interface.. make the Superdrive SATA like the hard drives. this should reduce manufacuring costs as it removes the P-ATA controller. ,
(no more legacy interfaces.)
replace the SATA controller with an updated one that can support Hardware Raid
Add one more hard drive bay
optional 2nd optical drive bay
make the current superdrive , slot loading
Powered Mic port on the front
2nd USB2 port on front
2 more USB2 ports on back
1 more Firewire 400 port on back
Firewire 800 port on front
PCI-X for future Graphics cards
personally i wish the apple logo on the side of the case was lit like the way the powerbooks are. with a way to control the brightness in the control panel.
Built in Bluetooth. as standard on all models.
i think to make it more streamlines. they should be able to have one large heatsink to cover both processors. might not look as cool but would save room. for the needed optical and hard drive bays
I like the look and size of the G5
Just my opinion