When receiving quest giver loot (the "choose a reward" item dialogue), I've noticed that my artificer gets lots of crossbows and light amour, but no medium armour. Given that medium armour is a starting option for artificers, this strikes me as odd (and somewhat annoying).
Similarly, my rogue/wizard (eldritch knight) is offered robes but never light armour, even though he has the skills for it and wears it consistently.
Artificer should be easy to fix: artificers should be offered both medium and light armour, perhaps biased towards medium (rather than light).
Multiclass characters are trickier. However, if the character has the skills to use a particular class of equipment and they have it equipped (or in a weapon quick-slot), can it be added as a possible selection?