OK, I finally took the plunge on Baldur's Gate 3, and, coming from playing several hundreds of hours of Solasta recently, the first thing I noticed is the lack of a combat grid.
Going back a bit further, my son and I spent a ridiculous amount of time playing Mario + Rabbids Kingdom Battle. We were super pumped for the sequel, but when it finally came out, it kind of fell flat for both of us. Whether or not it's down to this, I don't know, but they also removed the grid.
That game, of course, was an XCom-like. XCom used a grid, but a more recent Firaxis game, Marvel's Midnight Suns, got rid of the grid as well.
To me, all these gridless iterations of classic strategy games just aren't as engaging. I guess they're going for a more immersive rpg type of feel? But to me it seems to sacrifice the strategy aspect, and ultimately, judging based on my hours played, that always ends up being too great a sacrifice. My play time on Marvel's Midnight Suns is less than 10% of Xcom 2, and the same is true for Mario + Rabbids Sparks of Hope.
I'm sure BG3 is a great game, and I'm sure I'll enjoy the campaign, but so far it's not giving me the 'feels'.
Do you miss grids? Or did they only slow you down?
I may not be the right guy to answer that. What I played of it felt very... knowing. Tool-like. It really seemed to want you to know what you wanted to do with it, just in the way it presents itself. Once I got to playing it felt like a good one of those, though, it mostly didn't get in its own way as much as I feared it would.
I'm assuming you already played the Divinity Original Sin games if you're not considering rolling into those after BG3, right? Because those are pretty much more of that.
The other obvious "basically DnD" option is the Pathfinder duology, but those games go hard in ways I definitely would not recommend for "looking into getting" into anything. It's be ready to start over from an unwinnable scenario 30 hours in or stay away.
Not 5e. I'm not a tabletop guy, but my read on Pathfinder from Osmosis is that it's DnD for the people that never got over 3 or 3.5. Like, literally it's based on DnD through that whole open format they were trying to shut down recently. You can tell in the videogames, too. In many ways they feel more like the old BG releases than BG3. If those games were unreasonably huge and had some wild campaign-wide mechanics.
The core rules of d&d (mechanics but not settings) are available under a free license (it was the Open Gaming License, or OGL, although I have a feeling it's a different license (Creative Commons , maybe?) now following the backlash from earlier this year when Wizards tried to scrap the OGL and replace it with a worse license)
Pathfinder was originally based on the d&d 3.5e ruleset. I'm not sure how far it has diverged from that, as I've played neither. Solasta is based on d&d 5e (the latest version of the rules), but is in a non-d&d setting of their own creation. BG3 is also based on 5e (although less strictly than Solasta), but also has the D&D license, so can use the Forgotten Realms/Sword Coast setting
Personally, I enjoyed Solasta, and think it's a great representation of combat on 5e. The writing and story aren't amazing, and it lacks the crazy amount of freedom/choices of BG3, but mechanically, it's a great implementation of 5e rules.
We're getting into the weeds of DnD now and I'm not into the tabletop side of things enough to be that guy for you, so I suggest you google these things from better sources.
But basically, as I understand it there is an open license that allows people to make RPGs based on the DnD ruleset and actually sell them. Been there for ages, it's at the core of several other popular systems, including Pathfinder's "just keep playing 3rd edition forever" take. Hasbro tried to shut that down and monetize those derivatives as part of a wider push to milk the recent mainstream popularity of DnD (on the plus side that's also how we got BG3 and the new movie, so... take the good with the bad, I guess?).
Fan pushback was swift, strong and mainstream, so I believe they pulled back on those plans for now.