As others already mentioned, I think DOS2's first half is brilliant as you have many options and choices both during exploration and combat, but i was only able to finish the second half with mods, as i realized battles started to be tedious and tacticwise repetitive, and i felt the need to tweak the rules to be able to keep playing. Due to high level number bloating, armor system and combats turning into teleportation-fest i kind of lost interest along the way, the effect of these started to kick in after approx 30-40 hours into the game and i realized im actually trying to avoid the combat i enjoyed so much at the beginning. This also affected our coop play, we unfortunately lost interest with my party.

Though mods made me finish my single playthrough, there were frustrating times as not all of the mods were getting updated with the game and occasionally broke the immersion anyway, given its really hard work to make them fit with the games systems seamlessly. So it would be nice to have rule tweaks at least to have built in by the devs.

I hope BG3 will keep up tension and the tactical feel as I play, i already like a lot of gameplay additions they made compared to DOS2, but something currently feels off with pacing and combat, making me think its a long way still to make the game as exciting, various, tactical as it could be based on the foundation they have. At the moment i dont feel the gameplay loop is that tense and exciting once you get the hang of using the same basic tactics with all chars, as it could be with some small changes. In combat we already have a lot of unique actions and spells (Larian is always really good at this part) which is really nice, but action economy and need for different tactics feels off, it gets tired fast. Given camping is spammable any time, it also adds weightless moments where the really good narrative would suggest a more uptight scenario. Thankfully this is still early EA and i think Larian learned from their mistakes.

I know this is all subjective but there is definitely a not-negligeble portion of players who wants more challenge or more authentical rules, I hope Larian monitors these things carefully (and possibly will give us the option to test and feedback some changes to rest/combat to some extent) and at some point they plan to introduce different game modes so players have some rule customization options at their disposal.