I think the groundbreaking changes in terms of immediate appeal will come in Pharo 6 (new widgets Brick/Bloc, faster graphics with SDL, better font rendering and so on) which will surely attract lots of newcomers to the environment.
To any Pharo devs that may be reading this, there is this snippet in http://www.pharo.org :
$ curl get.pharo.org | bash
In an age where nation states are fighting for control and MITM attacks are more prevalent than one would think, it does you no favors to promote snippets like the one I pasted. Please consider what the implications are and come up with a better way. I also noticed that you offer no signatures for the Pharo archives or downloads over HTTPS even. You do not need the bad publicity that will come with a security disaster stemming from these issues.