research: Experimenting with CopyExec changes [WIP]

[andygrove]

Which issue does this PR close?

Closes #.

Rationale for this change

What changes are included in this PR?

How are these changes tested?

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.17%. Comparing base (f09f8af) to head (51bcd4f).
⚠️ Report is 640 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2655      +/-   ##
============================================
+ Coverage     56.12%   59.17%   +3.04%     
- Complexity      976     1447     +471     
============================================
  Files           119      147      +28     
  Lines         11743    13740    +1997     
  Branches       2251     2359     +108     
============================================
+ Hits           6591     8130    +1539     
- Misses         4012     4386     +374     
- Partials       1140     1224      +84     

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