I wouldn't want anyone to die. Story wise yes, but as a playable character no.
They've been in the game so many years and if you play a specific character(s) all those years and get used them to be there, when they get cut off, it hurts man and a part of the game dies with it.
Even if their moveset is transferred to another character that would take the place, it wouldn't be the same.
I don't even play any of these characters and still i want them to stay, because i like to kick their ass or receive an asskicking and they remind me of the good old days when DoA was awesome.
But if someone has to go then i choose Kasumi. f that b. too many Kasumis.
And Jann Lee s voice could go and change more similiar to the old one. Now his voice sounds something like from an Angry Birds game