Unfortunately that one aspect limits the usefulness of its gpu for certain purposes. I think Apple bet on the Haswell igpu as being good enough for most users who buy the mini. They probably determined the HD 4000 was acceptable. They did move to a somewhat more expensive cpu in the mid range model. With good cord management, I could see someone having a setup for the mini at their home and office. If you only have to transport the brain, it wouldn't be that bad. You just plug in a couple things, and you have a more ergonomic setup than a notebook could provide.
I agree. Also, GPU benchmarks prove that going with integrated video in the high-end 2012 Mini was a backward step for graphically-demanding tasks. Frankly, notwithstanding the impressive quad-core update in the more expensive 2012 model, I'm glad I have the 2011 Mini with HD 6630M.
However, there really isn't that much difference in most of those benchmarks. For those who prefer a faster processor, I imagine the loss of the discrete card won't bother them nearly as much as it did someone like me.
That probably no-one else in the industry, bar Apple, would get away with it, is yet another issue & nothing new when talking about Apple's general business plan of trying to get more people into buying more expensive products, in this case iMacs.
FWIW, unlike many consumers, I'll never buy into that agenda (not least as I can't stand any AIO's with reflective screens), but I strongly suspect I'm in the minority in this respect.