well 1280x800 is reallly enough (and has the mystical 16:10 :P)
why triple band LTE? next phone with maemo could have those since that's a fact that 4g is still far from complete (well you have some 3.5G data transfer called LTE but it's still newborn infant) quad band GSM with full 3G is enough (and WCDMA for people in USA and generally out of europe), I will better go for Wifi N (since mostly WIFI is mostly cheaper than cellural data transfer, as it's generally free). Resistive or capacitive? who cares? if it had to have NASA themed bulletproof case it would be capacitive as resistive needs pressure, but we are happy enough on nokia plastic cases and there's not so much flaws on resistive. better go for big enough screen for new bigger resolution and make it true LED (not the LCD with LED backlight) so it consumes tiny batery power. bigger battery capacity ? why not? more RAM ? definately! I vote for 1gb or 2gb since ARM is 32bit. (micro)HDMI? well it needs some digital TV-out and it's definately one of them and it's smaller than DVI (having DVI in mobile phone would be ridicolous :P) perhaps it could even handle FullHD TV Output. better camera? why not, but 5MP with Carl Zeiss optics is enough. USB 3.0? Yeah some people still use wired transmission and it will be much faster than USB 2.0 and compatible with it. hardware support for OTG/hostmode? Definately. Keyboard? Definately, and match a bit bigger buttons under bigger screen, maybe even a 4row one. faster/multicore CPU? well at least a bit faster and at least 2 core. faster GPU? definately ! for support 720p or even FullHD films on built-in camera (5MP>FullHD) and modern Games through HW-accelerated OpenGL. 64 GB internal memory? well better make two versions one 64GB, and one 256GB - why not? microSDHC port? i prefer microSDXC (for SD cards > 32GB) . And finally Maemo? Sure but freshed up since some binaries on N900 in non-modified systems are ancient whiloe N900 is only a bit old. Any Maemo-compatible Linux will suffice too while not being DRM-infected (easyDebian couldn't work on N9 due to signing binaries on rootfs and the need for different version of shell binary.. or eD folks maintained it out? well the DRM still sucks).

well from last politics on Nokia I forecast that there will be no Nokia Linux phone until they mantain to make Nokia Company cheap and it's bought by somebody else than microsoft :P. It's named sabotage, or more gently on stock known as speculation.

If i finally Degree the Programming Electronics And Telecomunication on my end-of-world university I sure project similair device but on AMD64 architecture (nicknamed x64 by Intel) with at least 8GB RAM, I'll benefit from APU ("The Future is fusion" said AMD), hardware moddable intristics (as much moddable as current Laptops so eg. choice between 64GB SSD or 1TB-or-more HDD, extendable memory with Laptop RAM modules etc.) And I'll use Powerfull Multi-Use Antenna (so adding new protocols will be matter of driver only, and FM/TV transmitter will be easiest of). And Sure all Cellular comunication working including talk and MMS (or some newer cellular message service), and cellular phone hardware gadgets such as accelerometer. don't mention PC compability, handheld-console-like front (and full HW keyboard under a slide), and a few tasty things. Then I'll collect Bucks, the device will be used over years, and thought of any new version good enough to make my users switch (if i can't i can wait for Third World be rich enough to buy it and Worldwide Population Gain :P)

If someone is crazy enough to do it before me, then I'll certainly buy it, and the producer will have great puzzle to make users update the hardware again :P