It really depends on whether or not they choose to meaningfully go after their offshore assets. Krugman wrote a useful discussion of the topic:

https://www.nytimes.com/2022/02/24/opinion/russia-ukraine-sa...

Vlad is already a billionaire, so probably not a whole not.

vlad is a romanian name

How is this relevant? Vlad here is short for Vlaidmir anyway, a russian name. Romanians have Vlad but I suspect its origins are Slavic.

I ve been told it's not the right way to refer to Putin, which is probably correct, there are are other dimunitives

It's just a transliteration of 'volodya'. Not many English-speaking people would understand if you used the proper diminutive form of the name.

Yeah, and the particular associations with that name fit well into current madness.

It have trickle down effect, if that person owns >=50% of some other business, it is also on sanctions list automatically.

Short term? No.

Longer term? Maybe. Enough pressure on those in power will erode Putin’ support base. Cut off enough of his wealth and he’ll have a harder time holding on to power.

In any case it won't stop him from continuing his anschluss of Ukraine at this very moment.

Oh no, he could crush Ukraine for now but that does not guarantee a definitive victory. But think about the hate Ukrainians have for Russian oppression, they’d stay quiet for a while if needed (for lack of viable options) but at the next chance they’d stab their captor in their back in a moment of weakness. Brothers they will never be by force.