Adding an ITS class is one thing: Changing the designations is going to be construed by some as "restructuring the category" - a much tougher sell.
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I don't buy it. That's silly. It's just a name.

OK, how about ITM (for money)?

Or ITF (for fast)? :P

Or ITO (for OH MY, that's a lot of money)?

I think worrying about naming is silly. Who really cares what it's called? Just make the sequence make sense.