If they do this they should go all the way. Nuke the 401(k) and traditional IRA going forward, remove the income restrictions on Roth accounts, and lift the cap on Roth contributions to $23,500. The employer match would become taxable into a company-run IRA.
Yeah, honestly, I can't bring myself to care a whole lot either way. I'd obviously like to know what the rules are, but beyond that, I'll just deal. I pay may taxes, I will continue to pay my taxes in the future. I try to minimize the amount of tax I pay within the law, and that's about it.
If anything, Rothification of everything simplifies retirement, since you no longer have people (Mustacians) plotting out withdrawal strategies to minimize tax implications. Not that there's anything wrong with that, but it would free up time for, I don't know, reading a book or building something cool.
I wouldn't be thrilled if they taxed my current balance, but as long as I could pay the taxes out of that balance without a penalty, I could live with it.