What features would you want on an emulation handheld ?

hello,

If you were to create your own handheld, what would be the most important features? Obviously some things are dependant on others like analog sticks need analog platform support like PS2 and dreamcast.

Just curious what other people's preferences are

Please help.

Thanks!

I didn't find the right solution from the Internet.

References:

http://www.sudomod.com/forum/viewtopic.php?f=11&t=4191

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