If you read or listen to what Mick Lynch and Dave Ward have said they are equally concerned about it becoming captures by newspaper sellers and others from the cobweb left. That is why - unlike some - I do not oppose local stewards from unions having a coordinating role. Plus, from there and until actual experience says otherwise, EiE should be what those involved make it be. If local groups become monopolized by the usual crowd EiE dies as an idea and a campaign that can reach beyond a narrow subset bluntly.
Like you, I am not interested in hearing centrists like Burnham, leftie MP's or trade union tops at rallies. However, as a tactic and as a starting point I don't oppose rallies as a way of bringing people together and forging local links (the same applies with the picket lines, which I would expect everyone on here accepts is both necessary and a good starting point). The litmus test - for me - will be when the local groups are formed: what form can the community work take, how does it link up with the issues communities face, is is supportive and ground in solidarity rather than parachuting middle class lefties in to areas to tell those living there what to do, what does it mean concretely in terms of action around the cost of living crisis etc etc.