One thing that I have always wanted is for each clip to show it ammo count in the UFOPedia page... without navigating to the "INFO" page, either by each clip type if the clips are different?
If the gun determines the ammo count then have the the info listed by the weapon name, or if each clip by type, i.e. kenetic, incinderary, etc. can have different ammo counts then place the value next to the clips on the UFOPedia like it shows in the soldier inventory next to the ammo clip icon.
I use the mod "Weapon Ranges Shown" which is really nice QoL to have on the weapons page, so maybe there is an easy way to make a mod to show the ammo count? I thought that was pretty slick to change the language string to include the range value.
The other suggestion is to be able to navigate to the UFOPedia page for a particular item or weapon from the buy, sell, craft equip, or soldier inventory screens. This could be accomplished by a CTRL + mouse click or ALT + click, etc. That would mean the items would have to have a UFOPedia page tag to know where to go. An there would need to be a check to see if the UFOPedia page is visible yet by research or discovery, etc. and if not then do nothing.