I'd take them the path toward more naturalist than arcane specialists, of course let's be honest pretty much every elf is a magical type being in WoW universe
so it's not like magic wouldn't have some presence.
I would have their theme be that old-school ranger elf allied among human and dwarves, they can be that "vanilla elf" which is literally what High Elves on Alliance are just as Humans are your regular run-of-the-mill humans found in every fantasy genre.
The Blood Elves don't follow that archetype, Blizzard has subverted them. What's interesting is I was prepping up some DnD5e and going through the player's handbook and found this information regarding High Elves:
"As a high elf, you have a keen mind and a mastery of at least the basics of magic. In many of the worlds of DnD, there are two kinds of high elves.
One type is haughty and reclusive, believing themselves to be superior to non-elves and even other elves. The other type are more common and more friendly, and often encountered among humans and other races.
The sun elves of Faerun (also called gold elves or sunrise elves) have bronze skin and hair of copper, black, or golden blond. Their eyes are golden, silver, or black.
Moon elves (also called silver elves or gray elves) are much paler, with alabaster skin sometimes tinged with blue. They often have hair of silver-white, black, or blue, but various shades of blond, brown, and red are not uncommon. Their eyes are blue or green and flecked with gold."
Anyways, yes yes it's a different universe but when I came across that it immediately jumped out to me that these two types of High Elves reminds me of Blood Elves and High Elves in WoW.
There's a lot of similarity in that passage with how Blizzard has treated Blood Elves on Horde and High Elves on Alliance pretty much the same way. This adds further reinforcement to why I believe Blood Elves will never get these themes/aesthetics we discuss here for High Elves. Because it would greatly conflict with the image Blizzard has set forth for Blood Elves.
It's just like how even though Night Elves had a history where arcane magic was a huge part of their society, the Night Elves of today don't carry on that legacy because Blizzard took them in a different direction. Blizzard then also took the opportunity of an underutilized thematic that wasn't really strong in modern Night Elf society and expressed it as its own thing with Nightborne.
Same thing here, sure back then when High Elves were in the Alliance there were those that worked with humans and were friendly with Rangers and Priests etc (even though there was always that society in Quel'thalas who didn't want to be there), but that's not the direction Blizzard continued when Blood Elves came to be.
The continuation of that are the High Elves that have stuck in the Alliance, who went against their larger society because they didn't agree with the path Blood Elves went down and still continue to express this "more friendlier" and "found among other races" tropes we see with High Elf lodges working in tandem with Draenei, and of course among Humans and Dwarves too.
Blood Elves, even today, yeah sure they're part of Horde but you still mostly see them keeping to their people as a group or now that Nightborne are officially Horde you see a lot of Blood Elves and Nightborne together still expressing that "Elf superiority" mindset from an observational level.