What we DON'T need is to take a step that pisses off VP to the point where he decides to punish Poland militarily. Current Russian military doctrine considers tactical nuclear weapons an available option in their order of battle. So not only do we not want him to feel cornered to the point where he sends over a missile or three and trigger Article 5... we also don't want to beat him so badly, so quickly that he decides he needs to send in tactical nukes to wrap this mess up quickly so he can move forward finally. Steady, low-intensity, grinding military and economic pressure is the way to get through this without spreading the war. The longer it takes, when he finally cracks and tries to take it up a level his support internally may at that point finally have eroded and he then shares the same fate as Czar Nicholas, who also made the mistake of fighting a 'weak' foreign power (Japan) and losing. Sadly that does not mean anything good for Ukraine and more importantly the Ukrainians.
I am not worried about a conventional Russian attack. This is not the Soviet army that outnumbered NATO 5 to 1 in tanks and God knows by how much in troops. The imbalance is now in our favor by the same margins in the opposite direction, not only in raw numbers but also in quality of training and materiel. Putin is painfully aware of this; more so now that he's seen how effective his war machine is vs. what he thought it would be.
As much as I would dearly love to see those MiGs take to Ukrainian skies, the plan to get them there thru Rammstein was just plain poorly thought thru. I understand why the Polish government didn't want to send them directly over... same reason we can't have American pilots flying them in. And maybe the same reason we can't have Ukrainians taking a train ride to Germany to 'sneak' into the base and 'steal' them when base security has been given the day off.
In the long run it may be a smarter play to keep shipping in ground to air missiles as we did in Afghanistan. This needs to be played as a long game ... all the worse for the Ukrainian people but better for the survival of the world.