I've altered my SO to the new account. I have every faith that my donation will be used to support Steve or will be donated to the named charities. Go Steve!!
Same here.
It would be nice to have a general overview of how the money is being spent at some point, what surplus there is and what plans there are at the end of the attempt (tricky given that we don't know when this will be), but I don't have any concerns about how it seems to be run. From the looks of it the change is just to make the money go directly to Steve's account rather than via Roger as it did before. With hindsight I'm sure they would have set up the original donations differently but no-one has a time machine to go back and fix that.
I'm more than happy for my money to be used in anything connected to his attempt; whether it's wasted on a train ticket or hotel booking than ends up not being used, for buying endless amounts of toilet roll, for part paying any income tax or to cover missed NI contributions he may or may not end up having to pay, anything really. I'm donating it to be used as he sees best and I trust him to do that. I also trust anyone else with access to the money not to take the piss with it, and they wouldn't be taking the piss with my money at this point, they'd be taking the piss with Steve's money as (by that point) it's his not mine.