Just some random thoughts on some tools I would like Lee Valley, Lie-Nielsen, or another premium manufacturer to make. Of course, given my lack of experience/expertise, these idea's may be very well be completely ridiculous. That said, maybe these are planes you "need" but just didn't realize it.
1. A metal bodied fore plane: Think about it. Wouldn't a modern scrub plane, thats the size of an old school fore plane (14-18 inches) be great? Something that could settle the scrub plane vs fore plane, wood fore plane vs metal fore plane debate. Because scrub planes are simpler in design than a bedrock my guess is one could be made that is close size of a number 6 but a good deal lighter. With a heavily cambered 1 3/4" to 2" inch blade and some modern adjustment mechanisms you have yourself one heck of fore plane.
2. A bevel-up/low angle jointer that's the size of a number 8: I can't believe no one has put this out yet. Imagine a bevel up plane that's 24" (or dare I say 26") long. Once again, bevel up planes are a fair amount lighter than Bedrocks so this would be a great option for those who want a really long metal jointer, but don't want the weight of a No 8. Set the mouth back extra far (like in the LV BU jointer), and you'd have a serious jointer plane.
3. A modern moving filister with a straight blade: I know, I know, skew blades are awesome, but it would be nice to have the option of the LV rabbet plane with a square blade. Also, I realize ECE makes a good moving filister, but the adjustments on the LV seem so nice. Alternatively, LN could remake the No. 78. Actually, I'm kinda surprised they haven't already.
Hmmmmmm, maybe I'll just need to start my own tool company. Looks like I better start reading up on metallurgy.