How to Get a More Politically Active Varangian Guard

So on this other forum I frequent, the question came up: why, historically, was the Varangian Guard so loyal to the Byzantine Emperors? It got the wheels turning, I haven't posted a decent AH here in eons, and I wondered, what would it take to get a Varangian Guard that behaves the way, say, the Praetorian Guard did in OTL? You know, supporting usurpers and conspirators, killing emperors and auctioning the throne or putting their own guy in charge? How do we get a Varangian Guard that would be willing to do this, or is it even plausible?

As a quick add-on, why do you think the Varangian Guard was as loyal as it was in OTL? I have my own opinions that I've made known on said other forum, but I'm wondering what the take here is, and whether my thoughts jive with it.
 

Typo

Banned
The Varangians were foreigners and therefore have little to nil chance of actually gaining power. It's kinda like how the late Western Emperors had Germanic bodyguards: if the emperor die at the hands of them, the enraged public and establishment will tear them down.
 
Indeed, the best way to avoid Praetorian Syndrome is to have bodyguards foreign enough (and small enough) that they can't get enough political clout.
 
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