Tbh I think Blood Knights weren’t a great idea from minute one. I think it would have been much cooler to just have Spellbreakers. Paladins but with arcane spell effects. I think that would’ve kept with the Sin’Dorei’s wizard aesthetic a lot better. But it is what it is. The magician angle was abandoned so thoroughly the NBorne now have it through squatter’s rights.
The Sin’Dorei’s focus has been on the Blood Knights who’ve been just regular Paladins and the Farstriders. This is 100% because the Elven Ranger remains an enduringly popular fantasy trope, as is the Knight in Shining Armor. Most people just aren’t playing paladin to mug angels.
And of the leaders of those subfactions I certainly like Liadrian the most as a commander. Brightwing’s greatest achievement is existing and Lor’Themar is kinda a delicate flower of a poet who’s shockingly easy to bully. Liadrin meanwhile has been pretty competent and no nonsense. If she has any misgivings about crushing the Alliance in Arathi she doesn’t show it. And she’s the only big Paladin to stand up to the KotEB in Legion, making them pay for every inch when they sucker punch the Silver Hand.
She’d be about the only one I’d happily follow into battle. Brightwing hasn’t upgraded his gear in 16 years and Lor’Themar’s liable to get distracted writing a haiku about the horrors of war.