It would make some kind of sense and match the rhetoric of a lot of republicans - but on the other hand, it also sounds awfully risky especially if the plan is more or less known to anyone?
They'll play the part of ally, to a limited degree, when their stooges in Western Democracies don't have any demands of them. But no amount of trade will change their priorities as far as diminishing the dollar with something they at least partially control.
Russia is willing to play an ally, but only insofar as it brings them closer to what they really want: Europe. Anyone who doubts this is utterly clueless about Russia and not worth listening to.
Other than land what, exactly, makes them a useful ally for the future? A willingness to throw bodies into a meat grinder?
That's the real kicker for me about all of this - Russia is weak. Trump is bowing down to a loser.
It's best not to see these as the actions of governments acting in national interests, but as a section of an trans-national class acting in their own interest. With borders and statecraft being some of the pieces on the board they play with.
Lines between countries are for schmoes like you and I. Trump owns capital and etc assets around the whole world, just like Putin.
This is the siren's song of Western Geopolitics. Believing that it will work This Time (tm) is a surefire way to get wrecked.
Russia borders China, unlike the rest of The West. Why would Russia ever sign up to put themselves on the front lines of tensions between the West and China. But people delude themselves into believing that they will, because it would be very convenient.
I can't imagine Putin allowing his country to be "used" like that (regardless of how desperate his situation gets), especially considering that China is literally next door and would absolutely destroy Russia in any kind of military conflict.