Meanwhile, back in the actual subject of this thread...
Kamala needs to do something to distance herself from Biden and show the voters that she's closer to where we are than where he is.
One form that could take which would probably still help would be to campaign on her intention to actually do any of several popular economic policies to actually help with the lives of ordinary people, instead of just the vague "if you work hard, you're in my plan" fluff. Its effectiveness for the campaign would be somewhat hindered by the obvious "why suddenly just now" question and the fact that voters are used to hearing Democrats claim to want to improve the economy for the peasants and then watching them not even try to do any of it (particularly the one she currently works for), but it would be better than the nothing she's running on now.
However, Israel's recent expansion of its war, plus recent admissions from both Israel and our own State Department that neither of them was ever really interested ending the genocide and bringing peace, are giving her the perfect opportunity to take a popular position distinct from Biden's on an issue that would probably be even more effective for the election anyway. If she were willing to announce that the weapon shipments will be stopped as soon as she takes the oath, she'd gain an impenetrable lead immediately. The timing would take care of the "why suddenly just now" question because this moment is right after it really did get worse than it already was. And standing up to Israel's control over American politicians is not something the voters have seen American politicians even pretend to do before, so we haven't had the chance to become tired of the routine yet like on domestic economic stuff.
Separate from that, she was recently asked about cannabis and said now she believes we should legalize it (and she even claimed to have already thought so for a long time), so that's one issue on which she's moved in the right direction. But other things have moved up in people's priority lists lately, which have bumped that one down, and it's not getting any media attention. And it's a bit hard to believe given her previous behavior on that subject. So it presumably won't have much effect on the election by itself, unless she adds enough other similar moves to it and they start to add up to a theme of actually wanting to get good things done instead of drifting along like the usual in politics.
And both she and Walz need to be doing more interviews, not just rallies. Rallies are for people who are on your side already. Interviews are how you go to the people who aren't coming to you. Yes, I know she sometimes doesn't do very well at them, but sometimes she does, and she'd instantly get better at them if she had something to say that people wanted to hear on important subjects instead of just trying to circumnavigate the lack of it, and doing more of them would not only get her more practice but also mean people get used to how she talks and any little individual missteps blend into the background instead of standing out so much for being so uncommon. And yes, I realize that Walz does so much better at them than her that she's probably been hiding him to avoid getting up staged, but that still just means having him more in public view would improve the standing of the whole ticket, and she needs to prioritize what's more likely to get the whole ticket a win, not what feels best for her ego even if it means losing.