Easy. 1) GET RID OF GNOME/HILDON. Simply put, it's bloat, and doesn't deliver the bang-per-buck that a simple X11+WindowMaker or other GNUStep desktop delivers. Not only would our tablets be faster and more responsive, but we'd have oodles more memory available. Unfortunately, I don't think this is ever going to happen, primarrily because the people working on the 770 have never seen a Linux box that didn't have GNOME or KDE installed. *sigh*. I'm on the verge of doing this myself, just to see how big the difference is.
2) MORE APPLICATIONS. Don't just release the tablet and expect a cult following! Maemo is a good start, but there should have been boatloads of programs already ported before the device even hit the shelves. It can't be that hard. The 2006 OS just came out, and the application package shelves are still bare. What the hell have you guys been up to in the past year?
3) GIVE UP ON HANDWRITING RECOGNITION. Nobody uses it!
4) USE A LOW-POWER CPU WITH AN X86 INSTRUCTION SET. They exist! Solves problem #2 in one fell swoop, too, while making future applications that much easier to eventually see running on a 770 as well. I write apps for X11, and the only thing stopping me from writing apps for the 770 is the whole ridiculous gnome/hildon/maemo/arm mess that I neither have the time nor the patience to learn.
5) ENCOURAGE HACKING. Word of mouth = $$$.
6) INCLUDE USEFUL TOOLS. It's been a year, and there still isn't a useable rdesktop client out there, or a clock/calendar that makes any sense. VNC is a mess. Where's the standard slate of PDA tools? Yes, I know, I know, it's an "internet tablet", not a PDA. But guess what. It's a PDA.
7) MAKE IT FUN. How long would it have taken to get MAME or at least an Atari 2600 emulator ported to it? Hell, most PDA game shops are struggling to survive. A couple free 770's and $5000 cash would give any shop a real boost, and something cool for everyone to use.