You want to continue to be run by great products, not process for it's own sake.
Stay focused and don't try to do too many things at once. Care about execution quality.
The thing that kills startups at some level, is the founders giving up.
It's difficult to get large groups of people, to the extreme levels of focus and productivity that you need, for a startup to be successful.
Whatever the founder cares about, whatever the founders think are the key goals, that's going to be what the whole company focusses on.
No matter what you choose, build stuff and be around smart people.