The 256MB might still be a problem, as this thread is proof of. Good and nice that some put their packages in /opt but not everyone will, not yet. What if there was i.e. a cron-job monitoring the available free root partition space? When an alarmingly low amount of space is available, you can be queried if you want to expand the root partition by one of the techniques above? Linux has all the tools needed and the alternative is to NOT have a way out except uninstalling.