Possible duplicate of:
The pieces are smaller for higher resolution, the colors are not primary and there are more of them.
Does this exist? I had in mind the standard 4 by 2 brick becomes 8 bricks each with 4 by 2 pegs.
Yes. LEGO® may still be a toy, but it clearly a toy for all ages. Here are two examples:
LEGO Architecture is clearly aimed at adults.
From one of LEGO's press releases:
With models developed in collaboration with architects, LEGO Architecture inspires future architects, engineers and designers as well as architecture fans around the world using the LEGO brick as a medium for reproducing esteemed structures. Fans of all ages can collect and construct iconic architectural sites, including: Frank Lloyd Wright’s Guggenheim Museum and Fallingwater, the Space Needle in Seattle, the Willis Tower and John Hancock Center in Chicago, New York’s Empire State Building and Rockefeller Center, The White House in Washington, D.C., Farnsworth House in Plano, Illinois and the Burj Kalifa in Dubai. Each LEGO Architecture set contains a booklet featuring step-by-step building instructions that is prefaced by exclusive, archival history, information and photographs of each iconic building, its design origin, its architect and its architectural features.
I'm sure there are some young architects out there, but this level of depth is more typical of adults.
LEGO has also a corporate-focused play for adults called LEGO® SERIOUS PLAY®
Build a better workshop with the LEGO® SERIOUS PLAY® program!
The LEGO® SERIOUS PLAY® program is a radical and innovative process designed to enhance business performance through building with LEGO bricks.
I would think that the best way for adults to embrace lego (if you know basic coding) would to get into the mindstorms and maybe build complex moving structures.
As you indicate yourself, the best answers regarding your question and current LEGO are already given in the other post. If you are not restricted by "current LEGO", I know of two more options:
**) Modulex continued to be produced until the early 1980s in limited quantities by Modulex A/S, as per this article(PDF)
You could take a look at other non-LEGO brands targeting AFOLs. These can be more affordable, but also may be of a different quality.