epithet
Explorer
In the concurrent bonus action and attack action concept what prevents a player from ignoring all timing requirements on a bonus action. For example if you have an ability that said when you take the attack action on your turn and attack you can make a bonus action to do X. If everything is concurrent then would you also be able to take that kind of bonus action before the attack action?
If X is an attack that you could make as part of the attack action, it's pretty simple. If X is something completely different, like moving an extra 10 feet, I regard it as essentially becoming part of your attack action, meaning if you move the extra 10 feet you've taken the attack action even if you don't make any attacks. I know that doesn't synch with Jeremy's current advice, but it is the way that makes sense to me without getting all metagamy. It's a simple "that ability gives you an extra 10 feet of movement if you use it, but then all you can do is attack. That's all you'll have time for on your turn, unless you want to dig deep with an action surge."