Its nice that you talk to yourself ;-), but as I pointed out, you can't even move the trace 1/2 the screen height in 499mv/div (4.99V/div in 10x)! Clearly RIGOL made some compromises in the offset range limits that are a bit inconvenient...
Are we talking about the Rigol DS1054Z here?
On mine, in the first place the Vernier V/div scale only gives me 4.95 V/div, not 4.99 V/div in 10x, and the offset range is +/- 20 V, or slightly _more_ than 1/2 the screen height (total height 8 divisions, 1/2 height is 4 divisions @ 4.95 V/div = 19.8 V .
In 1x, I can only get 495 mV/div (steps of 5 mV) , not 499 mV/div, and again the offset range is +/- 2V, or slightly more than 1/2 screen height.
And of course at 500 mV/div the offset range is much greater.
So now I'm asking myself... what are _you_ doing wrong?
That is to say, exactly what measurements do you need to make that require you to use 499 mV/div (or 495 mV/div) rather than 500 mV/div, and require really large offset settings? And require 1x probe settings? What is inconvenient for you about Rigol's choices in this matter?
I use my DS1054z every day for all kinds of different things, and I've certainly found some very real "flaws", but I have to say this issue has never inconvenienced me yet.