Barkley is a tempting asset, and I fully understand why you want to get him.
Replacing Jacobs with a waiver addition can work. Or it can go wrong. Because we don’t know what any of those waiver additions will look like, come week 5.
Hines only makes sense if this is a PPR league. His role won’t change dramatically. Contrary to common belief, he is not JT’s handcuff. Just like Kenyan Drake was never Jacobs’ handcuff in LV. Hines is a role player, and that role is that of a pass catcher out of the backfield. He will see increased usage, but he will not step into JT’s role, should the latter miss time.
Latavius Murray is intriguing, as A) we know Javonte is out for the season, and B) Latavius showed last week that, despite his age, he can still handle a certain workload. I’m not sure the Saints expected to get ninja’d on him when they attempted to move him back to their practice squad.
If Latavius clicks, Boone may become an afterthought.
Allgeier is risky. I don’t think the guy has it, but that’s just me. But there’s also Caleb Huntley, who will get a chance. And in week 6, Damien Williams may be back. And none of these names guarantees a rushing offense you’d want to be affiliated with in fantasy football.
If you feel confident enough that one of these players can fill the roster hole you create by trading away Jacobs, then by all means, go for it.
You also have Hunt, who is not a write-off by any means.
All I’m saying is that, while you get an upgrade on RB1, no questions asked, you will not necessarily improve your team with that trade. It’s a risk/reward thing. If you feel the reward is greater than the risk, go for it. There is every chance it will play out.