First of all: Excellent points Lars.
What does it take to get us to sourceforge and up their ranking? How could we transfer our activity into their ranking?
If we want to adopt more developers, we'll most likely need the .deb or .rpm packages even if the installation got considerably easier.
Hosting solutions will mainly be attractive to new users unless you talk about virtual servers with preinstalled OpenACS. But will a *new* developer pay for this kind of hosting when only wanting to try and play with OpenACS in his/her sparetime ?