I played dk towards the end of wotlk and I think I mainly tanked at the time. By the time I picked up the class, blood was the tank spec if I’m remembering correctly. I ran ICC casually, and pugged all my content.
I shelved the toon for years and really just ran LFR on her until SL. I thought running dk would be neat for lore reasons (even though let’s be honest, we got crap for dk specific lore after the maw intro and arthas - our biggest lore hook- got disenchanted at the end. Big L there…).
I played unholy in nathria and liked it okay. Pushed up to 2 bosses in mythic. I really didn’t like how disjointed my cooldowns felt, and visually it was kind of a cluster all the time. Meters felt good though! It also felt very clunky before you got enough haste and the leggo cloak that was buried too far into progression at the start imho for most players. I played blood and tanked low-mid keys that season. Kite meta felt okay on blood with proper use of chains and grip of the dead.
I picked up frost in korthia because the burst profile was just so much better than unholy. No wounds, no games, I just ran up to stuff with a KM proc and deleted it. It made the quests quick, which is what I wanted. I ran keys as blood and dabbled a little bit in frost. I got to really like the aesthetic while questing. I felt like a frost death knight. Sounds, effects, procs. It felt visually cohesive to me. Mog felt thematic. The winters grasp mog enchant looks amazing. Lots to fall in love with.
I’m s3 I tried pushing harder keys as frost because of the tier set. I swapped from vent to NF for oblit cleave and fell in love with big chunky cleave and the glacial advance procs. My SL seasons 1-3 rank was decent, and most of my parses were in the 85-90 range as frost. I generally pushed keys as blood, but I didn’t bother chasing portals. I think my closest was a 19 DoS? The spec finally felt rewarding, although it did have a lot to juggle (multiple resources, positional requirements from GA and FWF, and weird burst priority windows that caused you to ignore RP).
I didn’t hate BoS in dungeons like HoA because with the venthyr ability and some good interrupts I had solid uptime on the CD. The pulls were pretty chunky at the start too which was fun. Lots of opportunity to use AMS in a few places too. It felt rewarding and like the content allowed for some skill expression. Compare to mists of tirna scithe where breath felt AWFUL and oblit felt great.
I drifted to Alts in SL s4. I ran a surv hunter at the end of s3 which just kinda made me salty. In s4 I picked up prot war and VDH again to chase some mog. Most of ZM was done on my war.
I gave this rogue a whirl in DF s1 and absolutely hated finding groups. I picked serve back up I’m DF s2 casually and I farmed portals on my monk in DF s3. I still enjoy dk but I don’t play it at the same level I did in SL. I prefer prot war when it isn’t in the dumpster, but still like playing frost dk occasionally. I wanted the axe in DF but the commitment felt so high that I just gave up on screwing with it. Which pretty much long term shelved frost for the xpac for me.
Here’s my profile on Warcraft logs.
https://www.warcraftlogs.com/character/us/magtheridon/servechilled?zone=25