Make it possible|default to automatically fill the launcher with most frequently used apps

[Jani Uusitalo]

I just had the brightest idea. Two actually:
1. Make the launcher fill itself automatically with the most frequently used apps.
2. Make the launcher infinite in size so that you could (theoretically, should you want to) scroll down to every app you've ever launched that the infrastructure knows of.

==Severity==
I'll elaborate on the justification below based on my use case. Depending on whether it's a common or a less common one, this report is to be read as severity 'wishlist' for a system default or an optional feature (an add-on or whatever they're called in Unity-land).

==Justification==
The way I currently seem to be intuitively using the launcher, manually, is to stack it with apps I use most, with the most used one on top and less used ones descending according to use-frequency down from there.

This is at least an implicit, sometimes explicit [1] use case for the launcher, and something at which computers are by nature better than humans. So why not make the launcher do this automatically?

* [1] https://wiki.ubuntu.com/MaverickMeerkat/ReleaseNotes#Ubuntu_Netbook_Edition

==Requirements==
Sometime in the past (see Bug #893214), the dash seems to have had a 'most frequently used apps' category, apparently based on Zeitgeist. So the basic infrastructure for this should already exist.

==Affected==
I'm filing this against unity-2d-shell, since that's what I'm using, but I suppose this applies to 3D as well. Ayatana might be the abstract-level target.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity-2d-shell 5.4.0-0ubuntu1
Uname: Linux 3.3.0-030300rc4-generic x86_64
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
CheckboxSubmission: 09ae689090491ca53449589269e4bfd8
CheckboxSystem: edda5d4f616ca792bf437989cb597002
Date: Fri Feb 24 20:54:31 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
SourcePackage: unity-2d
UpgradeStatus: Upgraded to precise on 2012-02-22 (2 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.