Since im getting bored of D3 already and yet wondering if worth rerolling from start say a BLM to keep myself busy until June ?
Yes. I started playing recently and it's so much fun.
Currently playing: FFXIV (Elucifer Arclight, Brynhildr server), LoL (Zacewing, NA server), SMITE (Zacewing)
the game got nice updates and well it can be played as casual or as hardcore ... the raids are really challenging and hard you wont be able to do any of them easily or without a good team ... takes months of practice and such
For casual players, the grind is extremely vertical. Atma farming is brutal, it could take you a day or weeks to be able to finish your atma, after that it takes roughly 13,500 tomes of mythology farmed to turn the atma into an animus weapon. For hardcore players, assuming your raid group is above average, will clear the current coil in probably a month at the most.