"But Michael Gove, the chief whip, made clear that greater protections would have to be offered to protect the interest of English, Welsh and Northern Irish MPs”
Notice he says its the MPs interests that need protecyes!, not who they represent.
The tricky part, technologically, is finding a design that preserves all the qualities you might want in a voting system whilst still having the new features. For example being able to delegate your vote by topic in a treelike structure is attractive, but this is somehow opposed to the notion of a secret ballot.
Can votes be re-delegated? Is this process transparent? For example if I collect a large number of "tech" votes , what is to stop me from selling them all to Microsoft?
I'd always imagined that the way you voted is visible only to your delegees. Thus buying votes at scale doesn't work because to verify someone voted the way they said they would, you need another voter to delegate to them. You gain visibility into one vote but it costs you one vote, so there's no benefit to be had by attempting to purchase. Of course you can try and purchase the votes of trusted figures to whom many people have delegated their vote, but this is no different to the existing system where you could try and bribe MPs.