Drop rate - is relatively low, and you got bunch of garbage unique equipments by the map bosses and tons of flame shards and dusts while everything in the trade house is valued by flame elementium. The drop rate increases dramatically in the late game,  which makes the end game gears inflate in prices. Crafting also requires tons of elementium, especially when you can revert those changes. P2W: The pact companions are directly pay to get (you will get ~30 free draws but considering the rate 1.5%...)... Compared to POE where the gameplay is almost unaffected by payments (except the trading stash,  but even so it's permanent stash), this is too much p2w. I spent about 1k on poe,  but I wont spend a penny here unless they changed the pact system.

if you like PoE and sometimes PoE feels too complicated and don't have enough time to min-max your character, you might love this game. Yes there is a cash shop system where you can gamble on pets that gives  you more advantages but, if you actually PLAY THE GAME and reached the end game, what  really matters is your gear. As for now materials for gear crafting is only obtainable by grinding and i hope it's stays that way.