If the series were ever to end how would you want it to close the final curtain?
No need to go into too much detail. Just describe the very last image you see in your mind that the series ends on.
I personally see a barren wasteland, Luc's vision came true and a big war has devestated the world. But, in this emptiness there still exists one sole green plant/flower on the ground to symbolize that there always exists hope, no matter how small. (Kinda like in the opening to SII).
Another less serious suggestion would be a picture of Viki eating at the feast after the war. You know, since she usually always teleports away before she can eat anything in all the other games
- I've got a warrior's sword with your name on it.
- Of Course I Know Chinchirorin!