ARCs and casters are still intended to stay at range and use their ranged attacks, so this isn't really a big deal. Rather than worry about a relatively meaningless melee attack, I think we should be more concerned with them coming up with a way to have ranged auto-attack. You'll just have to settle with doing your attacks manually for now. However, I'm sure it won't be any worse than the current system, and ARCs have it good now so it's hard to complain too much.