Stomp is a really great WA, but it's sad that in spite of that, the Dark Sword gets short end of the stick. The 2-handed moveset of straight swords is generally inferior to the 1-handed moveset, and the Dark Sword has that awkward strong attack. Its Stomp also does not launch people into the air, and only deals about 450~ damage, 100 less than a GS stomp, and 200 less than a UGS stomp, which is disappointing. Couple that with its short range, lack of poise, the fact that majority of its 2H attacks are vertical strikes, and that its ability to stagger people is trumped by heavier weapons with Stomp, the Dark Sword is in an uncanny valley right now. You can only really maximize its potential with a WA shield., but then people will get salty because it seems like you're just a shield-toting, normal attack spamming casual.