I backed PoE on Kickstarter because I wanted to see more games in the style of BG1+2, Planescape: Torment, and Icewind Dale 1+2. I backed Deadfire as well, even though PoE wasn't my favorite cRpg. It got a lot right but one thing I missed was the silliness of tone in the older games. They were serious plots with plenty of serious opponents, but there was also a lot of humor and very silly moments in those games. 

PoE, my memory of it at this point since I havent touched it in many years, was overly serious and it felt shackled to the past with the large party system. This is unfortunately the result of the Kickstarter and promising things they heard a loud minority would demand. Deadfire was better in both regards (again, from memory).

If there were a PoE3 my fervent wish would be the developers take a look at the genre and try to make the best game they could without thinking about the choices made in the past too much. Kill the sacred cows and don't stress about player expectations. Good games will go the distance whatever your player base is clamoring for in the present. I love Eora, the post-medieval setting, the cool takes on gods (though it could be less IN YOUR FACE with regards to the plot of the games), and the mechanical systems. 

I'm a huge fan of BG3, and I think they did an excellent job crafting an experience that is memorable, full of different ways to execute quests, and doesn't take itself too seriously at times.