I go with the former: focus on geeks. We are more critical, more demanding, and more likely to help a company shake out bugs early. Look at what this community of geeks did (and could have done had Nokia listened better) for Maemo. Make geeks (prosumers, early adopters, et al) happy, and we/they will be your strongest free sales force. Modern Marketing 101.
Better multitasking means more applications being used. But this gives more danger of a wild process quickly eating the remaining battery which may be devastating on a business trip. Not a marketing issue, but a phone that could allow individual quota for each application would really be nice.
Music, GPS, Browser can run live even in the back ground, anything else can be Pause for the sake of Saving RAM and Smoothen the camera recording, also increase the productivity of the N900 as well.
like just one experience of mine having 3 web browser windows open, transition app and bounce, i was to beat my high score then my mom called, i minimized the game and rush to my mom, when i get back on, and restore bounce, it was a game over.
On a poll of multitasking I had to vote that I use quite a few windows. But there wasn't a choice that said I had to because of appalling design in the OS. Maemo makes you open a page for every web page, it opens up a page for each conversation so I have 5 open using 2 apps. Neither a valid use of multitasking because there is no juice left for me to run other apps, for example if I put music on as well the music skips because it can't hack web browsing, flash and music at the same time. Nor is it a measure of happiness in the N900 or the N900's ability to multitask. I could do more and with better results on my tytn2 under winmo 6.0.