Improve statistic quality / More realistic statistics

There are more and more AUTOMATIC visitors around and distort/falsify our great statistics:
not only

1. search engines which build and update their index
   but also
2. lots of website watchers who notify their user on content changes:
   a) standalone softwares
   b) browser plugins
   c) webservices
   and
3. simple browsers with lots of open tabs:
   a) Depending on the browser and its setting, in the worst case every time the browser starts a new visit is counted:
   -after booting and opening the browser every morning
   -after updates (especially alpha/beta users may gets lots of updates..)
   -after installing/update some browser plugins
   -...
   b) websites which were used and are not left or closed but are still opened in a browser tab doesn't stop making visit-time count!
4. probably some more

=> Piwik should take action to get rid of all this misinformation!!

What could be done (cleaning actions):

1. Exclude visitors which are known/identify as searchengine indexer
2. Exclude visitors which always visit a subpage at the same time (+- a tolerance of some seconds)
3. Exclude visitors which visit a subpage in continuous intervals: every hours, every 2 hours...
4. Exclude visitors which opens more than one subpage at the same time (+- 1s tolerance)
5. Exclude vistors with no events on the subpage (if you have some events setup on every site)
6. Exclude visitors staying longer than e.g. 15minutes on a subpage
7. Exclude visitors which belong to the e.g. 5% of the most returning visitors on a subpage
8. probably many more things

To make this as transparent as possible, all statistic cleaning-actions should be transparent visible to and selectable by the piwik users.

There are at least two places where this could be done:
A) Globally in the settings
maybe at a new tab "Statistic quality"
via a list with checkboxes to activate each single type of "cleaning action"
B) as items in the segment editor /filter (e.g. when disabled it globally)

What do you think of this topic and the details?
I think this has a huge impact on our statistics and in consequence on our interpretation and the things we do/change/add/modify on our websites
Please add any comments and additional ideas!!