I purchased the DPS version.
I believe ColourSpace should optimize its operational methods, the layout of its settings, the reading and adding of test sequences, and the aesthetic appeal of its image GUI.

1.Enable single-handed operation.

Add support for the middle mouse button, the "scroll wheel button." There is a button that can be pressed by pressing down on the mouse's scroll wheel.
Any operation in the software that requires "Ctrl + Mouse" should also support the use of the "scroll wheel button." For example, opening a new window for the vertical icons on the left side, and panning in the 3D graph.
Using the mouse plus the keyboard is really quite troublesome; with the "scroll wheel button," it can be operated with just one hand.

2.The layout of the setting options on the right side needs optimization.

All the most frequently used settings need to be centralized into a new main settings page. When I use it, I have to switch back and forth between various settings, and options with similar functions are in different settings pages? (Should the settings pages also have the option to be opened in a separate new window?)

For example: Using Probe Adjustments in Probe Options, but needing to go to Graph Options to apply them. Using Manual Measure, but needing to go to Graph Options to Delete points.
The Display Characterisation page needs to be moved forward, and it would be best to merge it with Manual Measure.
(This involves version issues, which can be discussed later. In any case, I think the existence of ColourSpaceZRO is not very meaningful, as it lacks the truly significant Volumetric functions of Colourspace, and there is no upgrade path after purchase).

3.Test Sequences

I believe all test sequences should be required to be in a specific file or a list should be created, rather than users having to find them placed arbitrarily in different locations.
Preset patches should be added.
The names of the test sequences should be standardized, or a line of parameters should be added to the file, so that when adding patches, the software can ask whether to automatically modify the Patch Scale / Resolution, instead of having to go into Settings to check every time a patch is added in Manual Measure. （This again relates to the previously mentioned issue of settings options being too scattered.）

4.Aesthetics of the graphs.

Is it possible to temporarily disable the grid lines and the gray background? I find them extremely ugly. Also, the large white dots for each value in the dE graph. The saturation of the three RGB color lines should also be adjusted.

5.The software's interaction should be sufficiently clear and user-friendly.

There are issues with the function and location of various small settings. I will start with Manual Measure.
I don't understand why Auto advance is placed so high up. Shouldn't it be next to Measure?
Why does clicking on Gamut Coverage open a pop-up window? There is empty space to the left of the dE EOTF values at the top; it would be better to display it there. I could then take a screenshot of the values and share them directly with others in an aesthetically pleasing way. Also, is the Gamut Coverage only for CIE 1931? How can I view the Gamut Coverage for CIE 1976?
Also, when the mouse is moved over the square on the upper right of this page and HSL is clicked, there is no indication as to which rectangle represents saturation and which represents hue. I had to check the guide to find out.
The guide on the webpage is very good; it should be added to the Help section, linking directly to the webpage.

I will temporarily raise these few points for now.
I still need to sort out the translation issues, including:
1.Areas that have not been translated.
2.Existing English terms that do not match the functions they represent.
3.Translation issues with the zh_CN language.