It wouldn’t be a terrible idea to put an indicator for free item interaction in the bar next to bonus action. So you can see if it’s still available for switching items, pulling stuff out of allies’ backpacks, “bracing” your crossbow etc
Not sure what do you mean with that crossbow ... but the rest sounds great!
Last time I looked, the Brace action for heavy crossbows was labelled free action (doesn’t use an action or bonus action). I think there might be some new ones like that in Patch 7. May as well throw these kinds of thing under the same “free item interaction” resource to keep things streamlined and working as expected. It would also include pulling levers, opening doors etc. Having an indicator would make it much clearer. “OK I equipped my other staff, that’s why I can’t open the door.”