Nearly finished with my third full playthrough (first was back in early 1.1, second was when 1.2 came out, this one started last week). I went for a full archer character, mainly using bows and only using melee if absolutely necessary (only early game, before hardmode - I relied on a Starfury to conserve ammo because I didn't have the resources). Beat Plantera about an hour ago, and I have to say that the balance team did a great job fixing post-hardmode progression. The Destroyer was nearly impossible for me to kill with just Palladium gear, but was doable with Orichalchum armor and a Titanium Repeater + Holy Arrows - most importantly, the stupidly powerful items that you used to be able to get right after killing the WoF like full Frost Armor or the Mushroom Spear are now only obtainable much later in the game, as they should be. Full Orichalchum armor carried me through all 3 mech bosses, after which I swapped to Frost armor briefly before killing Plantera and recently getting full Shroomite.
I really recommend trying a themed playthrough of your own, as they add a lot more challenge to the game. Yrimir, who's a very well known Terraria player and YouTuber, is uploading videos of his summoner playthrough in just a few days, so I'd at least try watching that if you're not going to do a playthrough. I can link to it when it gets posted.