and that is why i beleive DA:I alchemy system is flawed: it's grindy, it's boring, it's shallow and un-engaging (almost like the entire game itself).
As for TW3, to be honest, i can see what CDPR is trying to acheive, and i understand they want it to be more attractive to new commers and old players who don't use it, but i feel like they were trying too hard.
a mix of TW1 and TW2 alchemy system would've been perfect in my humble opinion. in short: don't fix it if it ain't broken.
you want to make alchemy system more attractive ? then add potions with permanent that need rare ingredients that are not only hard to find, but also hard to get. Like, for example, a potion with a dragon blood and other stuff makes you more resistant to fire magic based attacks by -10%. (idk i'm kinda inventing stuff).
that would've been more than enough.
to make you understand my point more, i'll try to use a game with this concept in it, which is gothic 2 (aka one of best RPGs i've played)
if you want to get stronger fast, you could learn alchemy, collect two herbs (dragon root and king sorrel) that are somewhat rare ( i think their number is 10 each) dispersed all around the corners of the world. not only did this encourage me to learn alchemy to make all sorts of useful potions (which was already very fun to do), but also to explore the land thoroughly.
From what we've heard, it seems they're trying to do that with the alchemy system, which is a good thing and would've been more than enough to make alchemy more appealing.
now that i'm done with that point, i'd like to talk more about the argument that "collecting ingredients can get tedious
and that the devs want us to forget about all that boring farming for herbs". well for starters, ingredients themselves are everywhere in the world in large quantities (at least for common ones). it wouldn't exactly kill you to collect a few herbs every now and then to get your potion, and becomes almost like a ritual in some way. Besides, considering that they're trying to make you upgrade your potions over time by collecting herbs, which could be possible since the potions have a much shorter duration than the previous games, in order to make the duration longer (maybe) and overall more effective.
despite how interresting the concept may seem, it might become tedious and boring in the long run and ultimately divise people. on one hand, there are those who don't mind doing grindy stuff (like the people who enjoyed DA:I, which had a similar alchemy mechanics), and those like me, which would kinda be fed up by it feeling it being an unnecessary change to the previous alchemy system and somewhat annoying.
in the end, the game is finished, and we can do nothing but wait for its inevitable release, and see for ourselves how the alchemy system will be, which despite how promessing it is, may have many problems in my opinion. and if that's the case, i may simply mod the game ^^
there, that was my analysis of the whole alchemy system with the data we have so far. thanks for reading my post.