I don't understand how one can have such problems with this.
As you yourself say, both in the DAW and in TotalMix FX, you can use user-defined names.
So just rename them the way you want.
Since tastes can vary significantly in this regard, one must first establish a universally understandable basis.
Which is why the standard names are being used that are also stored in the driver.
How this is being shown or organized in the DAW is anyway no topic of RME, it's the way the programmer of the DAW decided this to show.
Sorry, but I think your remark regarding ADAT1 and ADAT2 is inappropriate. It is clear from the context that it refers to the ADAT port (not the channels inside). RME interfaces can have up to 4 of them. Therefore, they are also named ADAT1-4 in this 'port context.'
Within a digital port, there are a different number of channels, which sometimes also depends on the sample rate being in use. Channels are in a different context.
My recommendation to you: often, it's easier and advisable to learn things as they are. After all, the current concept isn't illogical in any way. It seems, however, that you believe that everything should be renamed exactly as you envision.
Well, actually you can do that yourself if you wish. No need to change a well-known and established concept.
BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub14