Wow. I think the complete opposite. Melee was too technical and was to hard to get into, and brawl's gameplay was flat out dull
My own opinion. What I hope for in this new Smash is more focus on beloved Nintendo franchises and doing interesting things with the combat system. Just a standard brawl mode is ok if you have friends to play with 24/7, but otherwise the game collects dust. I feel the additional modes, exciting maps, and collecting strengthens the game.
Melee had an amazing announcer, trophy collection, and lots of odd minigames with it that made it super entertaining. It expanded the game from n64. Brawl took it a step further with the cinematic story mode (super fun), stickers, assists, and game demos.
SSB4 had zero charm. The interface was poorly designed as if it was made in MS Paint (even though it was apparently designed by the same person since melee?), the announcer sounded weird (or maybe Mobus just isn't as ridiculous as the Melee guy), the amiibos contributed absolutely nothing of value, I don't care for omega maps at all, the maps weren't exciting, the split of zelda removed what was interesting about her (something something "engine limitations"), and character removals only to reimplement them felt like the developers don't understand what people want.
What was once a celebration of Nintendo, now tries to include any popular video game character like Sonic and Pacman (seriously, wat?). Too many sword Fire Emblem characters (surprised Ephraim wasn't chosen!). This iteration felt completely sloppy and misguided.