Move Imports to Suggests?

[leeper]

My dependency aversion is kicking in and I'm wondering if it would make sense to move most of the packages in Imports to Suggests to reduce the initial installation burden and the number of loaded namespaces. There could then be an function to install (and/or update) those Suggests packages so they are installed and able to be loaded.

Actually, this ultimately relates to two annoyances with R package namespaces and installation:

1. It's impossible to install Suggests packages non-recursively (i.e., to only install Suggests for this package, not all of the Suggests for all dependencies),
2. The default of install.packages() (for the reason above) does not install Suggests which makes it impossible to ensure installation of some packages without also loading their namespaces.