I think the firmware was developed on the big-screen DHO40000.
Yes, obviously it was. They made limited tweaks for the small screen, e.g. compressing the math channel button in the bottom to the small four-up, where the DHO4000 has individual fields similar to those for the analog channels.
So they should at least stop wasting space for stupidly long (and hard-to-interpret) axis labels and badly rounded tabulated values.
Regarding the vertical axes: For the FFT result, I understand the scope chooses the grid on its own -- so it could easily put the grid lines on even 10 or 20 dBV increments and label them accordingly with even numbers, right?
For the trace window, I see that the the signal's offset is adjusted by the user, and that drives the awkward odd values on the vertical axis. How do other scopes handle this? Is there a "snap to grid" option when adjusting the offset, say by pushing some button during or after offset adjustment?