fuck it after that glorious Winged Kriegan Hussar, it is clearly the Death Korps of Krieg who field them. Tell me one faction who could rock that better in 40k.
And Emperor help you if you somehow come up with Orkish Winged Hussars.
Attilan Winged Hussars. Steppe nomads + wings
Elysian Drop Hussars. Elysian Drop troopers have a tendency to get dropped inside enemy lines where they have to fight off the enemy alone because the Imperial Guard reinforcements they were supposed to receive never arrived, and the idea of air dropping winged hussars charging from the sky is MULTIPLE SIMULTANEOUS TACTICALLY amazing. That, and putting wings on their drop packs is aesthetic
Maccabian Janissary Hussars. Hussars with death masks
Savlar Hussars. Poles + Krokodil cocktail
Vostroyan Hussars. Hussars but with attached cossacks and fuzzy hats
Death Korps of Krieg I found worked surprisingly well despite being Prussians and not Poles, because they have a very large cavalry contingent full of GMO'd chemical horses for the express purpose of charging into artillery and lazer beams without giving a/f.
Mechanicus, if they could find a way to put basilisk cannons on horses.
NO SPEHSS MAHRINES D:<
Dark Eldar, if an edgy bdsm elf version of Winged Hussars on jetbikes. No horses though.
Necron Hussars could be pretty funny, assuming a Polish Overlord. All shiny metal and honourable, charging through fire without regard, though I'm not sure what rules you could use to represent a mobile cavalry cron army, unless you use loads of destroyers as a shooty hussar army. No horses though.
Tau auxiliaries?
As much as internally I want to REEEEEEEEEEEEEEEEEEEE due to evil Germanic Barbarians appropriating Glorious Polish Culture, Krieg is pretty amazing, and the attitude of "the whole planet is fucked beyond recognition but yeah we're fighting on fuckers" is pretty Polish, to be honest. That, and Chopin's Regentropfen, which, hate or love it, was Love And Krieg and it's spin-offs most amazing addition, and I would defend the idea of Krieg keeping at least such tiny part of it's Pre-Apocalypse culture for characterization reasons.
The only problem is that you can stick only so much gold and decorations onto Kriegers, something which Winged Hussars are very known for.
Why not just stick gold, decorations and medals on the officer Krieg Hussars? In the same way that other Imperial Regiments are led by the best leaders, and Krieg is led by the survivors? Because it's also worth noting that in the lore the Krieg cavalry supply much of the Regiment's future officers disproportionately to other army elements of their doom army, so the presence of medals and shiny bling would stand out more in the sea of grimderp armour