There are plenty of folks who have complained about Reaper's preset management.
Here are a few links
https://forum.cockos.com/showthread.php?t=207947
https://forum.cockos.com/showthread.php?t=180660
https://forum.cockos.com/showthread.php?t=125832
https://forum.cockos.com/showthread....09#post2104809
But I'm not sure articulations are on their radar at all. I certainly didn't consider it something that would help me with that....