This talk of ToEE intrigues me, since I got that game when it came out, played it for about 4 hours before yet another game breaking crash made me forget it for good. It also felt absolutely indifferent to your choices, just another dungeon crawler etc. Is it truly worth coming back to?
I do agree with everyone: Pillars is no Baldur's gate, but in all honesty I think we do have our nostalgia glasses on.
Bg1 was a giant, unbalanced mess. You had to crawl over every area to find some key quests, which meant endless random encounters. Some areas had no quests (e.g. the gibberling area, until extended edition) Every encounter was deadly, everything one-shot your pc (especially caster pcs) for the first few levels. The first assassin at the inn was a level 4 wizard: he could insta-kill your party by casting horror and then casting magic missile at you once (twice if you are a fighting class). The absolute only way to deal with him was to reload, sneak Imoen to backstab him/and/or attack him as soon as he is done talking. Metagaming was mandatory, not optional. Many encounters were similar (e.g. Silke fight=hit Silke constantly so she can't cast lightning bolt and kill us all)
This held until your clerics hit level 5 and gained the ability to summon skeletons and then every encounter was trivial, because you would just send a giant army of skellies along with a scout to kill anything. There were about 20 more companions than you would ever need (how many single-class thieves do you really ever need?) and most of them had very little to say/do: e.g. once you freed Branwen from being a stone statue, it isn't like there was a follow up quest: that was it! Jaheira and Khaleid had no quest besides "go to Nashkel", same with Xzar and Montaron, etc. etc.
Bg2 tightened the encounters, made the npcs distinct and memorable and added inter-companion chatter than encouraged me to try new combinations. However, this depth occassionally lead to madness too: e.g. I remember reloading a playthrough to five hours before, because Keldorn and Viconia decided to fight to the death just into Spellhold. Naturally Keldorn and his +5 sword of brokenness won: yay for dealing with the Underdark without a cleric. Oh, and when Haer'dalis decided to duel me to the death because I was involved with Aerie, that was also poorly thought out.
It's other faults were more reliant on the flaws of Ad&D: e.g. strength being useless since Gauntlets of ogre power and belts of giant strength. Sooo many dumps stats (charisma lowers prices by increasing reputation, which has a cap, which you easily hit
), if you aren't a cleric: wis 3 is not obstacle, if you want to cast wish later, just drink the potion of 18 wis first, if you aren't a wizard Int 3 is no obstacle and so on.
Let us not forget that both games let you roll your stats, meaning you could just devote an hour to clicking the reroll button and eventually arrive at godlike stats. let us also not forget, that being caught pickpocketing turned the entire universe hostile.
I think Pillars just shows off all the things that aged about BG1 in the intergrim period. If Pillars=BG 1 it is a solid effort and we should expect great things from pillars 2.