As an IT "customer" I loathe this kind of centralized environment.
At our company, we have both environments -- the highly centralized one built on traditional UNIX, and the PC world -- along with a few people that live outside the norm with "unsupported" Linux PCs. The centralized world is truly difficult when you need something perceived "new." For instance, I have had three weeks of pulling my hair out cajoling UNIX IT (being supported by a temp out of India) just to get the latest version of subversion client installed on the corporate network. What a joy it is when I can "just do it myself" on my own PC.
Also -- another "for instance"... I was forced into weeks of meetings where I was asked to reduce disk space on the UNIX filer for my project -- for less than 2TB worth of storage... That seemed a complete waste of time to me -- because our corporate laptops have 320GB personal space backed up daily, while the space on the filer was way more important -- supporting mission critical work for greater than 25 engineers.
So, having admin access on your very own decentralized tool is very empowering -- and a tool that can be customized for a particular person's style of work can be a _very_ powerful tool. Also, having the freedom to have your own tool rids you of so much bureaucratic CRAP. Centralization is good to a point -- yes -- but only the things that you _know_ will never/seldom/rarely have to change. Everything else -- decentralize. Give people the freedom to do dangerous and wonderful things.
For God's sake, stop researching for a while and begin to think!