1. As many of you have said, a real entry, basic game that new players can use to start playing. The PHB is waaaaaaay to long for newbies, let alone the other core books.
2. The minis line would support both RPG and DDM skirmish better. Neither crowd is overly happy right now, and I'd work to ensure that more minis are on theme, and a much higher percent are viable in the skirmish game.
3. Fantastic locations should have "blank" space where you can put in tiles, as someone else suggested. The maps should be on heavier stock paper, or even, gasp, already laminated for us.
4. complete feats - with feat trees, rules for making and using feats, updates to old feats, and easy explanations for how to build your role playing character using feats (want a chain fighter - here are the 2-3 different paths to that).
5. FCIII is the biggest no brainer ever, but I want II and III to be longer than I was. I'd like a followup on FCI also.
6. Let Paizo do as many Dragon Compendiums as they want - I can't believe no one else wrote this, if you did, sorry I missed it. But, they'd have to promise to more of the old stuff, and not so much from the last few years.
7. convert old Dungeon adventures to 3.5. Not just stats, but the whole thing.
8. fire a coupld of artists, but I won't name names, that isn't nice
9. PRC compendium.
10. The complete future book or whatever someone called it with Sheen...great idea.
11. Far Realms Compendium, but only if Cordell got to write it and incorporate his Malhovic material (I spelled the name of Monte's company wrong, I think).
12. All web enhancements/articles that refer to monsters would actually have pictures of them. For example the 1/2 fiend articles had pictures of the core monster, but not the 1/2 fiend version - lame.
13. More maps to minis scales on line for free that tie to published adventures.
Basically, I'd make it easier to enter the game, and make it easier to find the information you want. PDF would cost 1/2 the cost of printed products (maybe, I'd need to see the economics of that).