To do it because of Navalny would just be a out of a wish to punish, not out of knowledge it would actually change the situation. And is it the role of the West to dish out punishment?
Besides it would just be used by Putin to empower the internal story of the threat of the West & NATO.
It's also the humane thing to do. Accept any LGBT and any Russian who lives outside of Moscow or St Petersburg who are being forcibly conscripted for the meat grinder at 10x higher rates (effectively murdered).
Half-done it could be very dangerous - getting many well-connected and affluent people with nothing against in principle to the Russian invasion of Ukraine, but who don't like the practical consequences for themselves.
Russians tried to do that. Got labeled murders and told in words and actions to 'get back to their shithole' or outright to just die.
Quite surprising, that wasn't viewed favourably by other Russians.
As a Russian emigre myself, I can say that when you are calling for sanctions, you're calling for people like me to get screwed. Putin and his cronies don't seem too much damaged, on the other hand.
Done on paper ;) Then europe looks the other way while their exports to kirgizstan and other stans mysteriously quadruple starting 2022