Hello community,
I was just made aware by my consultant, that this exists: SAP IdM – Identity Management Web UI
As part of the "Customer Influence" they created this project where we as SAP customers can post ideas about what we think is missing from the IDM UI and how to make it better etc.
From the description page:
Scope of project
SAP Identity Management helps our customers to centrally manage their user accounts (identities) in a complex system landscape, including both SAP and non-SAP systems. The solution includes a web-based user interface for self-service scenarios for Employees, Managers, and Administrators. In this Focus Topic we will focus on Improvements to this Web UI.
In scope:
•Identity Management 7.2 SP9, software component “NW IDM 7.20 UIS FOR NW 7.10”
Out of scope:
•Releases/SP Level lower than 7.2 SP09
•Software Component “NW IDM 7.20 UIS FOR NW 7.00”
•Software Component “NW IDM 7.2 UI FOR HTML5”
Since this collection phase ends on December, 15th 2014 (so... in 4 days!), I thought I share the information about it here in case someone else also missed it till now and wants to contribute or support some ideas. 
Regards,
Steffi.