I would support such a ticket if it came about. I do not believe that will happen.
If Trump were somehow removed from the picture with DeSantis still remaining, I would support DeSantis. I do not believe that will happen.
If only the Republican Dwarf candidates were allowed in the picture, I would vote for "Vermin Supreme" as the write-in candidate. And I would make other preparations active.
I believe there is a non-zero chance of that last scenario.
The only way Trump is removed from the picture is if he removes himself or God removes him.
The first is unlikely to happen. The second, is up to God.
As I've said elsewhere, Trump isn't going to drop out of the race voluntarily. Particularly, as he's now the far and away front runner.
Will God remove him? Well, Trump is 76, overweight, and subsides on a diet of McDonald's and stress. But I'm not going to make this bet. In fact, I'd make the bet that Donald Trump will celebrate his 90th birthday.