Tiled background tile randomization; Increase free edition scripting limits; New script APIs & more.
Also the user who knows JS will still see the capabilities of Construct. By your logic, all the thousands of frameworks and libraries out there must be useless and irrelevant since their functionality 'can' be replicated in code. But pro coders and big companies use other products to speed-up the process, reduce the costs, involve artists along with coders. Many indie games were made with engines like Unity, GameMaker, Construct, Cocos, etc. while the developer was working for a major studio. Coding the entire thing from scratch was just not practical for them. Regardless of their skills.