Swapping Weapons - there is no cost to swapping weapons, so say you fire an arrow or attack with two weapons, you can then swap to a weapon + shield for the AC bonus at the end of each turn. In D&D it takes an action to don or doff a shield. Also you wouldn't be able to draw two weapons and attack on the same turn. While I do agree it's better to keep things simple for a video-game, I do think it should cost something to swap weapons/shield, even if it's say a bonus action. What do you guys think?
I also think that a free swap is very strong, but it may be hard to implement the 5e approach.
You need to give some sort of free swap so that a player can weight their options: do I shoot with a bow, or do I attack in melee.
You could argue that after an attack you should be locked into the weapons you used for attack, which would be fair.
However, this would look weird on casters, since they can magically drop their weapons, cast a spell, and equip all of them again, so might be a bit confusing for some players.
Also, do we then force casters to have a free hand to cast spells? For someone who plays 5e that is reasonable, but it may be confusing for video game crowds. Perhaps make one of your weapons a spell focus - but there are classes like ranger/eldritch knight, arcane trickster who don't have them.
Regardless some compromises need to be made.