dreamcast was made to be put on a tv screen long before hi-def or wide screens wer widely avilable and a standard tv with somthing like 640X480 is about the same wquality you would get watching normal networked tv ( ya their are ntsc/pal standards , intetrlacing , 4:3 16:9 etc , but i'm not getitng into all that here ) and any video card with tv out is going to downsample or upsample the image as needed so those of us with cabinets will be fine ( acctully anyone useing a "real" arcade monitor has all sorts of interfaces ) ... i would be happy if the thing will run the 4 standards ( 640X480 , 800X600 , 1024X768 and 1280X1024 ) and thats only if it runs it's own screen , windowed it can just be resized .
plugins are nice , but i think they should be placed on the bottom of any list as i would much rather see the emulation working then some neat plugin that may or maynot help.
needs fullscreen.
needs a command line option ( i.e. --loadgdrom )
should have multiple config's ... ( see command line option ) so you can switch from a capcom hack to a zbuffer game with ease.
loading a cdi or iso directly would help TONS but thats more allong the lines of a plugin
would be nice to use non bootable games , but because all orgial gd-roms are bootable i think this may get into some leagal issues...
disable sound and frame droping should also be options , but the fram droping is a bit of codeing work and as stated before , i would rather have the core emulator bug free then have extra features....