Regarding default installs for developer IDE(s) there are two options:
1. Install all major IDEs (Eclipse, NetBeans, IntelliJ Idea, MonoDevelop, Lazarus, CodeBlocks, Anjuta, SPE, monkey-studio, eric, gambas, idle, ...) or
2. Install none and let the developer choose. If it is just the IDE that is missing then at least all the rest is done.
I would be ok with 1 with there is enough place left on the HD for a bunch of data and virtual machines (consuming each about 30 GB in my case).