I like The Witcher Trilogy. I'm still playing the third game, there is one catch i picked up amazing weapons and amour from the second game but when i imported game saved 2 to 3 i never got his gear that he collected. As for another Witcher game with Geralt yes please.
Weapons and armor are transferred only when imported from the first part to the second.
Yeah, this was an interesting mechanic that devs started to employ -- goes all the way back to the D&D Goldbox games. In theory, it's wonderful, but it also means that any big changes to the engine or the gameplay design require all of the gear from the old game to be recreated and adapted to the new game...as who knows what crazy combination of gear player characters will have when they hop over.
Works great for games like the old D&D 2nd Ed., as it was such a robust system that it was easy to just stick with it over multiple games. (Games also didn't take 5+ years to make.) Now, devs tend to iterate on actual gameplay mechanics quite a bit between one game and the next. Makes rolling characters over a bit of a challenge.