Well first off, I'd like to say PortableApps.com has been one of the best and most useful websites I've ever seen. So I've decided to bring up some ideas to what PortableApps.com could do in the future:
--Applications Page: Scrolling down is lame. Why not have a little tab on top that has most popular apps and then another tab that shows all apps (and soon a Freeware tab, I know that's happening soon). People can just take a look at the most popular apps and see what everyone is in on. (of course, Firefox Portble would be on top
--Suite: I know this would be a pain to do but just to throw this out there: How about a little page under suite that would let you customize the apps you would want to have and then you could download the installer with all your favorite apps. The installer would download the apps you choose based on the apps you choose to be bundled with the suite. There would be a little checkbox next to every app and you click on it if you want it an in the end, there would be a little button that says "Download Suite". Based on your choices, PA would link to an installer with all that stuff in the check boxes.
--Applications themselves: A loading bar. Kind of like OO.o Portable (currently hosting the only splash screen by PA with a loading bar). So we could have something to look at while we wait for the app to load (particularly FFP)
I got more ideas, but I'm pretty sure they'll be done soon, so I won't post them.