Whilst the argument is ongoing, my 2 cents:
Just about any long-lasting game series will suffer from human lifespan, exponential growth and the general lack of discussion withing the frame of time relevant to each entry.
To sum up: Within 30 years, we've gone from CRT monitors to LED-based monitors, pixels that you could see with the naked eye to pixels that you might see with a magnifier glass, etc, etc, since that's just how fast the hardware technology has evolved.
Now speaking of the Divinity series, I have personally played them all. Even if the order was more: Divinity 2: Dragon Knight Saga -> Divine Divinity -> Beyond Divinity -> Divinity: Dragon Commander -> D:OS 1 -> D:OS2. The catch would be that Dragon Commander was not even out yet by the time I went through the first 3 titles. Nowadays, I would find it hard to go back to the originals, even if simply because my eyes can only take so much strain nowadays. But if we're to talk about Divinity (series) as a whole, ignoring the early titles that are still cannon to the universe may be unwise.
But then think of each of the titles within their own time frame. Larian has always gone as far they they could push given the technical limitations (as well as studio size and costs) of the times each of those entries were released.
Casual reminder that both D:OS titles were quite literally all-in bargains for Larian.
What remained consistent throughout was the good old Larian flavor. Talking with an immortal lich you're about to fight? Sneak in a quip or two, get a matching retort from the lich, making the dialogue feel way less stiff. Because the more notable characters, at least, have some dimension to them. Bellegar, the mad mage who speaks only in rhymes? Still shows some method to his madness when he actually helps the player character. Whatever the form their titles took, I could never fail to appreciate the Larian...ness(?) sprinkled here and there.
The other aspect that always drew my attention is the art direction. While I am auditory and typically fail to grasp visuals that easily, the sound design and the music kept stirring me onwards as I played each title. RIP sir Kirill, your work will be remembered, but that is not to belittle sir Borislav's work.
All in all, words alone will hardly do justice to Larian's own legacy and it's that very legacy that keeps me coming back. Now, if only the creature mechanic from Divinity 2 (not D:OS2) would sneak its way back into the series. And on that note, what wizards of the universe will grace us this time? :p
