Hopefully he dont
Personally, I have a strong will to do to my system whatever is need to make it look different from accounting applications. Since I am using computer all day, every day, I guess it comes natural, to make the place you are spending so much time enjoyable. I also learned that some people, many people, keep there computers by default, or to be more precise, with tones of default icons, laying on default green desktop with default apperinace for every program, even Winamp. I created desktop in which I am most productive and it looks good.
I also love applications not have icons jumping in happines from every corner but in this very case, in addition to things mentioned above, I agree with
In the end it should be the user who decides if he wants to have more comfort with slower menu speed but faster item recognition or fast menu speed and after that waste time to find the entry he wants to activate.
So,
As you are already doing a user interface overhaul you should reconsider your decision.
We are not doing this just for the money.
We are doing it for sh*t load of money.
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