And more this.
OK, so maybe displaying the UID "takes up too much space" - except that the large font (is there a way of changing it without changing it in your browser?) means there is already "too much space" - except this is wasted.
Not defaulting the parent posts's subject is an annoyance (but might encourage some "maybe my reply should have a different title" - except that breaks the thought flow when wanting a quick reply).
And all wasted space was in "beta-classic" view - the headlines only is too little info, while the tiles means even less information on screen.
How about looking at the BBC News website (and mobile version), to see how you can have a lot of information (on a non-mobile), and have a reasonable slew of clickable/movable icons for the mobile version. This comes across as the worst aspects of a desktop and a mobile site... The Windows 8 of blog sites, even