I think the Razorwing build is probably the 'best' way to play Titania, in the sense that it's her unique schtick that no one else can emulate and is a lot of fun to boot.

Lantern and the other powers are fine, don't get me wrong, but they're just generic Crowd Control and AoE damage. Other frames can do them better, and her Passive Skill doesn't do anything to buff gunplay or melee fighting. Using Titania and not using Razorwing a whole lot would be like using Mesa and turning her into a melee build. You can do it, sure, but you're missing out on a lot if you do.