Even if my 1st paragraph were just what you say it is, you wouldn't be right, since only the fact that this game is not 2d is a significant difference in control and gameplay flow. But I'm sure you know this, despite your words. You conveniently forget to mention the other point, though, because you know it weakens even deeper your statement.
The mechanics are different and that's irrelevant for the comparison? Wich comparison? You clearly don't understand what comparison I was judging. Stat allocation had a deep impact because it was scarce and only at the beginning -or with some very rare items. Inquistion revolves around artificial stat allocation with gear. The difference is radical, and relevant when you're trying to compare BG1 and Inquisition as similar, since both systems affect dramatically gameplay. The only "half truth" in that comparison is that none of the two games allow direct stat allocation ("half" because BG allowed some degree of direct allocation at the beginning).
That final statement is plainly false. I played BG1 and BG2 multiple times, and always with clerics. And healing magic was essential, and affected the gameplay flow radically. Abusing rest or feeling that healing magic is not relevant depends mostly on your gameplay style. But, as before, you know this already, I'm pretty sure of it.
I don't get how exploration in 3D is substantially different. In any event the criticism that the game has a z-axis is a pretty strange one. I would agree that it changed gameplay if it mattered in combat but its exploration only (at least as far as I've played).
The stat allocation comparison is meaningless because D&D is very loot driven. This is especially true when we're taking about 2e vs. 3e and we have the differential leveling curves for different classes.
Warriors and thieves (and the derivative kits from BG2 or TuTu or warrior-like classes such as Paladins and Rangers) are driven by loot.
Stat allocation matters in BG1 and BG2 because of the base bonuses, but there's no choice. It's just a choice between power gaming and not power gaming. I *really* miss stat allocation and I love systems like Fallout's SPECIAL but acting like the stat allocation itself is a big deal is silly.
I initially took your criticism to be that DAI doesn't have dice roll combat which is why I dismissed it as I did.
As for healing, again, you're wrong. In BG2 clerics were necessary and spells like "Heal" made a huge difference. In BG1 cleric class couldn't heal in combat effectively until around lv. 5 and even then it was very minor given the size of the party unless you had multiple clerics or abused the rest.
A level 6 cleric had what - 3-5 cure [X] wound spells? All Vancian casting is functionally identical to using items. To pretend there's a difference here is silly.