I don't sell HMIs directly. I use them for control panels. I only have control over which HMI brand I use, not over the number of HMIs I use.
I don't need nice graphics. My screens can do the job with ugly graphics too. Actually, I just display the number for Amps (for example), I don't use their gauge (too way ugly for me). In a very few specific cases I've created my own gauges, but they are not that pretty and its a pain to adapt to a different scale.
Going back to the "need", if you have nice looking screens on your HMI, you system looks "smarter", doesn't it? It's just eye candy, but it surely makes your job shine a little more.
Some customers of us (a few of them, for now) have been asking for more appealing graphics. I think they are comparing the Crimson screens to some of the SCADA system around.
Going back to the gauge, how hard can it be for the Red Lion engineers to create nice graphics? I've been playing with the Advanced HMI software, and the graphics are very nice, the gauge in particular.
Let me make it clear. I'm a big Red Lion fan. Crimson 3 is far superior than any other HMI software I know. Except for the graphics.