He doesn't like the user interface.

He wants the user interface to expose the user to the game gradually. As an example, when you first turn on a computer that you just bought that has Windows 8.1 on it, the screen goes completely black and then it fades in one word:

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Then they pulse the background colors through blue and purple and red, just in case you missed that one word. Then they ask you to wait as they do "something" (not specified what) before they give you the Windows interface and offer a tour of it. And your files, well you can't possibly be expected to know exactly where your files are (in My Documents), no, their location must be hidden, and instead a Favorites list must be compiled and presented to you.

In any case, then he complains that the ISIS Ship Chart has holograms rather than the full ship models, and that it covers the full screen. He suggests that all of the pure information screens (market, contracts, overview perhaps) be instead presented as snippets of information surrounding full glorious graphics (of ships, I guess).

Then he's complaining that CCP abandoned Walking in Stations and didn't take the avatar part of EVE past just the Captain HQ. We should point him to the dev blog comments and the Reddit comments that show just how incompetent CCP were with that particular feature.

Then he complains that in 4k resolution on big screens, much of the screen real estate is wasted; he wants the in-space/in-station "scene" to be displayed in a corner, and the rest of the screen to be filled with the data windows. Like the Pools of Radiance game used to be, back in 1982; little window showing you the dungeon in the upper left corner, the rest of the screen filled with your stats and the text descriptions of what was going on around you. (PS: Don't tell him that this can be accomplished with the camera offset sliders and with pinned windows).

Finally, he wants to replace the Windows layout of the interface with a tablet-like interface where you can flip between otherwise-full-screen "views". Like flip left if you want to see the market, flip right if you want to see the space. Or press left arrow, right arrow, or w/e. Also, some of the full screen "views" could be designed like Fallout's Pip-Boy screen, with various elements presented on screen, and with the users being able to mod the pip-boy to customize the position of elements.