Zardnaar
Legend
The problem I always had with Eldritch Knight is, at every level, I'd wonder if you shouldn't multiclass into Wizard instead for more spells.
Of course, then they went and made the Bladesinger which in many ways, is superior to such a multiclass. Which has me wondering if anything we can do with the EK is worth talking about if they'll just make thatmistakedecision again.
As mentioned, where the EK might really shine is if they get access to caster-only items. I can just imagine one-handing a Staff of Power, wearing a Robe of the Archmagi, maybe with a magic shield (Warcaster for the win) and becoming a literal tank- tough defenses + an actual cannon.
I wish they'd let the level 10 ability benefit other spellcasters in your party- that would have really made the subclass excel in the right party. This is really a subclass that has to be built right, to get more spells, either from feats or species (eventually- right now I think all we have to work with is Abyssal Tiefling for hold person), as the ability only cares that it's a spell you cast (magic items should count for this!), not that it's a spell you got from your class.
EK/bladesinger one of the most powerful builds later