How? Sure you take them out of germany but italy and france are Still there .This itself is devastating for Western Europe, as we saw from Russia's diverted development, away from the Rus states to Muscovy's autocracy and extraction model. I have seen this across countries in my experience as a development economist. Whenever the biggest buck lies in taking a greater share of the rent seeking, you completely abolish all incentives to make the necessary compromises to allow wealth creation. Compromises with the nobility are set back in the monarchs favour, and free cities are completely screwed. The despot most willing to use violence comes out on top. And the disproportionate power going to the Mongol favored state means innovative governance models don't have room to survive.
And this is all before we get to the devastation of Europe's universities that kick started the renaissance.
Also how long would it last ? Unlike the golden horde who was in a better position the panonian khanate would have been established by ogedie giving batus conquest to some one else (which already sows the seeds of trouble ) it's in a place were pasture is limited and their neighbor has tensions with them (both would have as Batu successors would feel that the land is theirs and the panonian khanate would try to expand east to get more pastures ) i mean do to various reasons from the ending of the little optimum to volcanos
The cold snap of the 1240s and especially the 1250s was bad one making the situation of the panonian khanate worse I don't think it would last nearly as long as the golden horde did .