Absolutely loving my time with it so far. My friend circle is also getting down on it too. It was cool we were in party chat for a good several hours yesterday and our experiences were all quite divergent and unique. Its also really impressive for a Bethesda game and that's saying something. The polish and visual fidelity and quality throughout is very impressive. I've also been enjoying the dialogue and VA.
I agree with the Stealth sentiment, I spec'd into it and yeah its difficult to get the drop. I'm thinking gear, weight and movement speed factor into it, along with enemy vision and distance. Managed to upgrade it though, sneak attacks do some serious dmg and with a silenced repeating weapon followup shots can ensure a takedown. Nice reactions too for fights, hitting a foe in the chest with a shotty and seeing them drop their gun and clutch their chest is quite nice. I haven't had many issues either with the AI. They take cover, use the environment, flee when outnumbered. Also sound design is pretty swell as well. I like on New Atlantis at night the sound of the frogs in the MAST area. Also Boost Packs rule, especially on low grav worlds/moons.
The game is everything I wanted and expected and then some.