Any potential "WW3" scenario is going to tank BTC, people will diversify into hard assets.

A small scale invasion shouldn't have a large impact. Small scale meaning Russia and Ukraine involvement only, oppose to NATO countries and the West getting involved. The U.S. has made clear they will not be entering a war so we don't have to worry about the U.S. economy taking a hit. Russia can't afford a war either but their GDP isn't large enough to make a difference in the price anyways, so their economy is rather inconsequential (absent of full collapse, then clearly that has implications).

Follow the oil, though. When the oil reserves run dry because Russia cuts off supply, then you might worry.

You are saying the exact opposite. If a " potential ww3" scenario takes place, everyone that is smart would dump their "hard assets" and invest as much as they can in bitcoin and other crypto currencies. You know that when a country is at a war, the government can confiscaste your gold, properties and other assets without compensating you right? They won't be able to do that if you hold bitcoin or other decentralized crypto currency.

I am hoping that in case Vladimir Putin will make true with his overarching plan of reliving the glory of USSR with invading Ukraine this time, the whole mess can prod the value of Bitcoin to the top...but for that to happen we should see investors and traders shifting their attention from other investment vehicles to Bitcoin. The question is: Are they confident enough to make that shift in case there can be a war or would it be the opposite? In case it can be the opposite then Bitcoin can go down. And that can be sad because Bitcoin should be playing like a safe haven during times of difficulties in the global scene.

It depends on whether we believe it is going to be a real war or pure theater for show. If it were a real war, in which people are really afraid that the conflict will escalate and atomic bombs will be dropped, I think the panic would be such that everything, stock markets, crypto, gold, etc. would go down. But what would be of least concern would be the return on investments.

Being pure theater, which I think is most likely if in the end there is war conflict, I think it would be neutral or positive for Bitcoin.

If Russia invades Ukraine on a full scale, then all of Europe will shudder. Whether or not the Russians manage to capture Ukraine first, they will lose the war. Of course, the war will greatly affect the European countries. The economies of Ukraine and Russia will be hit hard. But if the international community helps Ukraine in the future, then Russia will still face lawsuits, tribunals, compensation payments. As a result, as a large state, Russia will cease to exist. The impoverishment of the region is unlikely to benefit the cryptocurrency. Many cryptocurrency users will die, access to some devices will be lost.
But I don't think there will be a big war. Its consequences should be understood in Russia as well. So far, Putin is only scaring and blackmailing Ukraine with the aim of returning the occupied and plundered territory of Donbass back to Ukraine, but at the same time maintaining political control over Donbass so that Ukraine will not be able to join the European Union and NATO in the future. But Putin will not succeed. The killer and bandit will get what they deserve.

There won't be any "war" between Ukraine and Russia. There can only be an invasion and occupation of Ukraine just like how Russia invaded and annexed Crimean (part of Ukraine) in 2014 without facing any resistance. It would probably take almost the same amount of time as before if not shorter.
Neither US or Europe would or could do anything about it apart from what they did last time, empty talks and resumption of trades after a short time.

Consequently it won't have any effects on bitcoin price at all.

This is not 1948 anymore. The world has changed. A decentralized currency that doesn't take up any physical place and nobody can take from you is way more superior than the old traditional stores of value such as precious metals that take up a lot of space and can easily be seized.
Don't forget that bitcoin was created right after the 2008 disaster where the [almost] entire world economy crashed.

I think any sufficiently bad news has the effect of making people make dumb decisions. This could go either way. Either people panic sell for fiat, which was always the preferred and trusted payment system OR they invest their fiat into Bitcoin, hoping that in a war, it would at least be safe in the internet instead of physically. To be honest I think Bitcoin will lose out. Not because of any rational decision but because people will stick to what they have known.

Gold, on the other hand...

I don't think it would boost the price in the short term, as bitcoin is highly correlated with the stock market. As of now, while many of us would disagree, bitcoin is not perceived as a safe haven asset like say gold or treasuries for the institutions - though this may change in the next few years.

So my prediction is that bitcoin and the stock market will plunge, and after the market absorbs the news and effects, these assets will recover strongly later in the year or early next year. However, the upcoming rate hikes could cast a pall over the financial markets for the rest of the year.