The ICBs won't be going anywhere I wouldn't have thought - local commissioning is still going to be needed - there is no way DHSC will be able to commission local services effectively from the centre.
I do hope they bring some of the things that were hived off back though - the PCTs actually worked reasonably well until the government split them up and created the CCGs (which was nothing more than an ideological move and 'jobs for the boys').
When commissioning local services data, to understand local needs and trends etc is absolutely vital- then when the government decided to create the CCG they hived off all of the data and intelligence functions into individual Commissioning Support Units (CSU). CCGs then had to pay the CSU to provide the data (which they had previously got for free as the analysts worked within the PCT). This cost a lot more than employing analysts directly.
In 2022 CSUs were disbanded and the provision of data and insight moved to NHS Digital which was then absorbed into NHS England. The CCGs, now ICBs get standard datasets for free now, but if they need anything bespoke they have to commission it either from NHS England or private companies.
Since the PCTs were abolished, the CCGs went through numerous restructures to 'save money' and respond to the latest bright idea from the government who were sinking under the weight of the consequences of cutting so much public funding of health and prevention services. Which is ironic because the resources involved in restructuring are immense and the loss of expertise which just migrated to the private sector and sold back to the CCGs is costly.
Then you get the big restructure of CCGs into ICBs where they basically removed the teeth of the commissioners and put the power firmly in the hands of the providers - which is a major step towards privatisation.
I never agreed with the people bemoaning the privatisation of the NHS because I don't see a problem with local commissioners purchasing private provision if it presents value for money and meets needs - as long as the commissioners are public, hold the purse strings and create policy, the service is still very much a public service...but when the ICBs were created, that was a whole different board game!
Slimming down the bureaucracy is absolutely the right thing to do and hopefully they will give the local commissioners some of the power back.
I do wish however that they had done it the other way round and slimmed down the DHSC and strengthened the independence of NHSE - that way DHSC could focus on developing national policy only and leave the practical stuff to NHS England and it would also shield the NHS from constantly having to keep up with the whims of the latest Secretary for Health!