Let’s see what happens with the additional troops from NK. When the first NK PoWs turn up then things will have changed
There have been NK engineer troops in this conflict for some time now, along with NK artillery rounds and missiles, but this isn’t being given to Russia for free. If Ukraine is whipped up into a fury by talk of an operationally insignificant number of “Special Forces” and launches an attack on their training camps then NK might take it personally. This can only help the Russian cause and lower the costs to them and the strain on the Russian economy
SKorea has stayed out of this directly because internal policy dictates that it doesn’t get involved in ongoing wars. Their President doesn’t have the support to over-turn that policy, but factor in NK troops getting front-line experience and that support could be forth-coming.
SKorea already supplies Poland with armoured vehicle expertise (the Polish Krab has a SKorean chassis) and has supplied Poland and others (but not Ukraine directly) with additional materiel.
Bringing SKorea directly in would be a mistake for Russia, so let’s see where the NK troops end up