Okay, I tried vMaelstrom at V10, obviously too difficult what with not having many CP points, but now I'm V16 with ~220 CP, almost all legendary V16 gear with V16 glyphs and I still struggle the same as when I was V10. There is no comparable difference, either I burn through stamina (even with Siphoning Attacks), get two-shotted or don't do enough damage.
I'm a stamina Nightblade, running 5 Hunding's Rage and 3/4 Night Mother's Gaze. Dual daggers and greatsword and V15 jewellery with 1 weapon damage glyph and two absorb stamina glyphs. With food I'm running at 27k stam, 17.6k health, 1504 stam recovery and 2374 weapon damage (75.3% crit. daggers). I can swap out two one ring for weapon damage at the cost of 145 stam recovery, but it gives me 2534 damage.
I just can't seem to find a good balance. I watch people like Deltia and use almost the exact same methods and I know how to play Nightblade, it's something I'm very effective with in other solo content, but I can't seem to match the damage output and stamina recovery.
It feels like Maelstrom is designed only for those who have maxed out their CP and attained the best possible gear, it just feels like poor design rather than a challenge and it's kind of irritating because I loved the idea of the Arena when it was introduced.