Working on the network architecture is the first point. You can imagine being able to control who is allowed to operate a node, as well as how nodes are connected. There is surely something to do by creating " central" nodes and select only some nodes able to perform the verification
Thanks for the reply! Wouldn't that bring in more centralisation, though - we see in some blockchains (won't name anyone) how controlling the nodes, even if aspiring to be through democracy, is actually just central control of the nodes and therefore the chain.