I'll play.

A general thought: getting this kind of money can only come from one place: the Middle Class and especially the Upper Middle Class. Working Class folks don't have enough money to really help, there aren't enough rich people to tax. Yes, we must go after the highest earners, but to really fix this, the 45% of the population that is doing well but not yet rich is going to have to lift more than their share of the burden.

Answers:

M. Increase the IRS budget for enforcement and hire a large compliment of auditors to collect the tax money that extremely high earners hide despite it being taxable. Enforce the tax code aggressively with a few poster children getting draconian sentences early.

C. The current funding is less than the current outflow. And raise the retirement ages as well, slowly, to better align the demographics of a healthier, longer lived population with the system.

I. Properly applied, this could address electric vehicles using highways without using gas or diesel.

K. Tax hidden income, e.g., carried interest and (maybe) unrealized capital gains above some specific amount. This is really separate from your D, although you mention it there. This is not the same as M.

F. I used to be against the "death tax," but I now see it as a proper way to address familial wealth, especially wealth that has avoided being taxed through various tax avoidance strategies.

A. While I want Bill Gates to be able to give his fortune away, some of that money should go to support the government of laws that allowed him to acquire it.

L. Close loopholes and tax avoidance opportunities for high earners. This can only be effective if done along with M. Could it be included in your E?