Diablo III really has nothing on Path of Exile at this point other than graphics
You said you haven't played Path of Exile in over a year? Well, that's a mistake most people make when they cast judgement on Path of Exile. In the past year they revamped THE ENTIRE Endgame system along with adding subclasses that further provide more build diversity, and what has Diablo III done since then? Added a new season, a paid character class, and a special throwback event. The PoE developers truly love their game and community and aren't muddled by corporate greed or anything that has crawled up Blizzard's ass recently, and will continue to update their game with meaningful features.
I know you're probably talking about Diablo II but at this point Path of Exile and Diablo II are almost head to head in terms of quality of the gameplay, hell most of the team that are developing PoE are hardcore Diablo II fanatics/developers.
This game text a little while to REALLY get the swing of things IE the gems/skills linking them and how to read em. The passive tree, the ascendancy classes, flasks and the end game stuff ect ect. And of course the path of exile currency. Once its all understood its beyond fun, like...beyond fun and I still play Diablo I/hellfire Diablo II/LOD and two on going mods for each game and this is my favorite Action role-playing game but right and barely infront of Diablo II.
Fun fact: David Brevik one of the co-founders of Blizzard and the creator of Diablo actually went on to be the CEO of Gazillion Entertainment who made Marvel Heroes 2016 which is an MMO marvel version of Diablo, then left the company a year or so ago and now is on the Path Of Exile team.

Oct
Patches, Updates, Build of the Week & More At Path of Exile
This week's Path of Exile: The Exiled Tribune is a good meaty one with news about forthcoming v2.4x patches and changes to the difficulty levels for the game with the arrival of v3.0 in 2017.

Dec
Real 10% OFF for POE Chaos and Exalted Orbs in Xmas and New Year
How time flies! Christmas is coming again. Guess you guys cannot even wait to celebrate and enjoy this wonderful festival! And we have also prepare gift for all of you!

Jun
Thoughts on Reworked Charged Dash
Charged Dash is a very practical skill in Path of Exile Incursion league, and I have tried this skill when creating my new build, so I want to share my personal thoughts about Charged Dash, I hope this could be helpful if you guys are going to use this skill too.

Jan
I'm not fond of how you NEED the Anima Stone jewel
With Flame Golem enchant you get 88 damage(58 without) and can add 3 of these effects on top: 26.1 cast & attack speed, 87 crit and 11.6 phys dmg reduction or 304.5 flat life regen.

Nov
trade you can find a lot of cheap path of exile items
When you actually take your time and search stuff over some time/PM a lot of offline traders you probably could get them cheaper

Dec
Elemental Equilibrium being so strong right now
Just wanted to say you guys do a lot of work, and have great synergy. I've been around with PoE off and on and I've never made it to end game because I'll be honest, there is a LOT to learn in this game.