Dude, just stop it.
Private investor is Zdeněk Bakala, czech businessman. He provided funds to start development, with condition - KCD had to succeed on kickstarter, otherwise no more money would be provided.
Deep silver is NOT financing the game, it is mainly DISTRIBUTING it. As such, they have very little word into game development itself.
Alchemy in this game is sooooo much better than in any other games you have mentioned, that its ridiculous to even claim something like that.
Lockpicking and pickpocketting minigames are also incredibly fun and well done.
There is no weaponsmithing, but sharpening and repairing minigames are so much more ellaborate then anything I ever saw, that its mindboggling why nobody did it before.
Witcher 3 did not have stable companions neither, nor it had stealth+stealing mechanics at all, so what the hell are you babbling about KCD not having enough features? Not to mention that skyrim had those features, but they were hillariously underdeveloped (how many times you got stucked inside room by your companions? How fun is alchemy, when you just click on things in inventory? How well works stealth when it barely takes in account sound and is just visibility check? How well is done pickpocketting when its just “press E to pickpocket” with paused time?) All of this is much better in this game.
Story is approximately 30 hours, + shitload of hours for sidequest and explorations, there MIGHT be 60-100hours of gameplay overall as stated by Dan Vavra.
And there are NO ACTS anymore. KCD is complete, standalone game with very long playtime and complete story. IF it is success, there might be sequel, which will have story based on planned act 3 - but no more acts right now.
There are currently no CONFIRMED DLC, there are rumours that some things might be added as DLC (like female hero storyline), but nothing is confirmed yet, and payment/distribtion models were not really mentioned at all - again there are only rumours that backers will get DLCs for free (as they now get preorder bonuses aswell).
Also please note that only thing separating KCD from AAA title is smaller budget and rather short development time for new studio. In most other aspects it definitely feels AAA - and when it comes to gameplay systems (reputation, sneak, stealing, minigames, archery, fencing, player stats, AI, settings, world building, save system) its borderline revolutionary in every one of these aspects - because everything works just like you would expect it to work in real life.
Any other questions?