While I've made my own wishes clear (ie, a software game selection menu a la Everdrive), it occurs to me to wonder:
What is the benefit, if any, of having an LCD screen in this instance? Maybe I'm just a pessimist by nature, but using an LCD screen as a method to select your games seems to only cause problems with the way I think:
1) More power draw. Flash carts already tend to draw much more power as compared to a standard game.
2) Component cost. While LCDs aren't really that expensive, if shells are provided, there's going to be an additional labor cost as well to cut the LCD slot out of the plastic.
3) Game selection. If we're forced to use the LCD to choose the game to flash, that means that changing games requires getting off of my pasty fat ass and physically going to the console to push my way through a 1 or 2 line menu. Not only tedious, but simply being forced into doing this every time would be an active annoyance. Gaming for me is recreational, and this would be pretty obnoxious.
4) Aesthetics. I have this awful mental image of a NEO-GEO cart with a neon-blue LCD just...shining while I'm trying to play Metal Slug X. Personally, I think it would be distracting, and I think it would look very ugly. Sue me, I want my flash carts to look NICE.
But my question is not rhetorical. Seriously - what is the benefit of having an LCD screen for game selection?