I think its fun, maybe some more rewards would be cool though (waiting to see those changes). I really really really dont get all this trap whining.. THEY RE SO EASY. If you practise some runs and figure out what is going on (places you can stand, places you should run), you ll never ever ever die again by traps. EVER.
Izaro on the other hand, i think its bad.. Characters with medium gear and builds should be able to kill him, in my oppinion.. I dont want to wait till lvl 90 or something to get my points. So mostly, i pay for the merciless Lab run by the time im done with the quests.. and then when my char is grown big, i can do some solo runs for fun.
From my experience on new content, i expect endgame Izaro to be unplayable. Only OP, meta builds will be able to kill him blah blah blah.. build diversity blah blah blah.. accessible content blah blah blah.
hc is all about judging situations picking your fights..this is the complete opposite i just run like a headless chicken and pray i dont get hit with the Path of Exile Chaos Orb..awesome mechanic the faster i am the less chance of getting hit. to me the lab feels like a slap in the face for the already dieing hardcore community give lab the hardcore pvp treatment and i stop bitching but this random dodge or die shit is so obnoxious.
i like the lab, it's design, artwork and athmosphere. it adds alot to the game play and gives poe a totally new aspect which makes it differ from other games. it's ok that it's hated by some elite players because this opens the possibility of players who don't mind lab running to sell profitable enchantments, a stragegy ggg already used with corrupted area fragments.
For me Labyrinth was like campaign, like another act. I goes through it around 20 times till I understood boss mechanic and finished on Merciless. Enjoyed it for first two runs of full clear, after was enjoying only boss fights - I run through labyrinth to reach Izaro. Boss challenge was great, good time there, enjoyed it very.
When I acquired Ascendancy points I went there for enchantments for my gear 5 times later, but it was boring and it brought no entertainment or reward for me. I felt it like waste of time that I could invest in leveling or trading.
I have checked what enchantments can be obtained on poe wiki and when I saw that list long few pages I felt amused and labyrinth for me is closed book from that time.
I believe new labyrinth will be entertaining as part of campaign with new boss fight, but when I get 2 more points I believe I will go there only for xp. But if those xp wont be good enough in sense of time investment, I going to pass it again.
Since lab has been added I pretty much only run maps long enough to get my level up. Otherwise I just run the lab to Buy Chaos Orb, I feel the design is pretty good, though there are a few trap layouts that somewhat undoable for some builds. The somewhat steady layout and timer lets you fairly easily tell if you are improving in your ability to do it, which I find pleasing.
Its extremely profitable if you can run it fast. On a good day doing 4+ keys runs you can make quite a bit from thh currency drops at the end alone. Tie that in with the occasional good item drop and enchant and it has been vastly more profitable than maps for me, I made over 200c in a coupla hours the other day just selling winds of change that were dropping from the guaranteed lab unique chest. It does however require you to be able to run it fast for it to truly shine, so your results may be different (Im often in the top 5 of the merc lab times).