Regarding the subkey details information shown in Kleopatra Werner's suggestions for changes are:

• replace ID column by Fingerprint column
• remove Type column
• the dates (valid from/valid until) should always be given in ISO format
• change Strength column title to Algorithm and in the contents add the algorithm in the cases where it is missing at the moment (e.g. 2048 -> RSA 2048)
• remove column Primary, as the primary is always the first one

Additionally I would find it sensible to display the keys always in the order of the keyslots.

I find it irritating when the authentication key is shown in position 2 instead of 3.
But I do not know how the order is determined now and if there is a good reason for this.