Not sure I understand all of this completely after one read, but I like the idea. It's especially interesting to think about the difference in motivation between an educational institution, an individual, and any other institution.
Thank you for breaking down the various rewards' and interest, and for noting the fact that your chart reflects the dollar value of Steem Power rather than actual dollar amounts. It'd be interesting to play with the assumptions you've built in to build an understanding of the range of possibility from conservative to overestimated.
Now that I think about it, I wouldn't be able to repeat this to somebody without mistakes if I didn't have it on hand to reference, so I am going to read through again to make sure I get it as much as possible. Cool thought exercise, though! I'll reference it if I ever post something similar with a tweak or two.
Thanks for the feedback! I can send you a copy of the spread-sheet if you are interested. It was done in LibreOffice.