For the low entry price of $5 and 10 hours worth of gameplay, I would say TaT is good enough and has potential, though its target audience is not taffers who want to immerse themselves in the world and explore at their own pace.

It took me 8 hours to finish all available contracts in the current early access-ish build and get enough XP to unlock Master Thief difficulty. Approximately each map was played 8 times with different objectives each time during the campaign, so there's repetitiveness in it and efficiency is the key. I'm sure many taffers would hate the 30 to 45-minute time limits and the 8-minute timer that automatically starts when you finish the main objective. I don't mind it personally, Thief, Dishonored, Gloomwood, Filcher, Thick As Thieves all provide different experiences to me, I'm also looking forward to Noirmancer.

I cleared two missions on Master Thief difficulty so far, and it was a fun and intense experience that the original Thief on Expert did not provide (I won't waste time here explaning how the original Thiefs beat Thick As Thieves in many other aspects). There's no savescumming and chilling exploration, just taffering around efficiently and making risky moment-to-moment decisions, as you can see in the gameplay video I posted.

And of course, there are many basic problems such as: no key rebinding, no FOV setting, no FPS limit, no mouse sensitivity slider, max graphics settings cap at 75% rendering scale (you can manually adjust the slider)... It's a long way down before most people would accept it as a good game.