It's a great question and I think it's worth highlighting-- each subsequent rover up until this point has been of very different design. Curiosity took the lessons of SpiritOpportunity (which learned from Sojourner) and cranked the volume, but now we're seeing them do refinements of the Curiosity design.
As the cost of launches comes down it wouldn't be shocking to have small fleets of proven Curiosity or Perseverance -type rovers all customized to various tasks.
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u/salty-carthaginian Feb 18 '21
It's very similar to MSL, but has different instruments: https://mars.nasa.gov/mars2020/spacecraft/instruments/