Taxing unrealized gains will be extremely complex, and given that they aren't allowing us to deduct unrealized losses its a pretty shitty setup for the taxpayer.
We need to drastically simplify our tax code rather than further increase its complexity.
A perfect tax code would be impossible, a more simply one would be very doable.
We're talking about a campaign proposal here with no legislative draft so its a guessing game, but in my opinion any move similar to taxing unrealized gains will serve only to make it more complex and would not fall under the category of "good" for me.