Just thought I'd add a follow-up. Yesterday I pulled out the dremel and went crazy
About an hour later since after grinding I used hand sticks to smooth the grinding and then the dremel polishing disc to get a decent finish (not as good as the original but at least smooth to the touch) I ground the bottom front and back edges to be rounded like the bottom sides edges. Made the corners on the bottom much softer to the touch since they were truly rounded off now. And today tuned out to be a rather painful fibromyalgia day so I could see how things felt right away. Made a huge difference.
I did order some of the sugru silicon stuff since it seems like it'd be helpful for other things too so I may put that to use on my original Grand. I don't want to pull out the dremel on that since it has an anodized finish.
So now all I need to do is figure out how to get a specially polished and anodized Grand and mini in the colors I want. Wonder how much special requests cost?