i atleast think side indicators should be implemented into Grid2. easy to implement, and also easy to turn off for those that don't want them.
It's not about how easy something can be implemented, and it's also not about being able to turn them off. Grid's concept is minimalistic. If people want additional functionality, they'll need to install additional modules.
It's "opt-in", not "opt-out".
PS: we have to find a naming convention to prevent new users from installing Grid2 with *all* possible modules from the svn.