This guy sums it up pretty well where stealth currently sits.
In my opinion, stealth gameplay is still very useful. For me, stealth's greatess strength is that it allows players to conserve ammo and also reduces the threat level of some encounters. (E.g. reducing the number of zeds that need to be fought concurrently).
What stealth will not let you do is quietly stealth kill every encounter in the game. There will always be some encounters that will start out a certain way, and the player will have to adapt and figure out how to overcome it (e.g. attack volumes).
As far as a roadmap is concerned, the missing big ticket items for gold have been mentioned several times in the dev diary. (E.g. water fix, bandits, story, art update to current HD / PBR standards etc.)
Also, there will certainly be balance changes along the way. The upcoming "learn by looting" change hopefully will buff crafting back up since it has largely become an insignificant in comparison to looting/questing.