They must focus on the scale up issues otherwise they will have trouble keeping the ETH at number one position as compared to other altcoins out in the market.

So few things to note down here is, ETH is still the same ETH as it used to be. There are not much developments in it besides one thing that its transaction is getting slower and slower day by day as the transaction count per seconds is increasing. So its very important for it to develop that particular area.