The problem is not about adding things, it’s about adding the proper things to fit the needs not what you assume is the solution 
Random is pure random, so it can display 10 songs from the same album in rare cases, completely breaking the first need. And why song mix is made for (Or even the shuffle button in the song list as it ensure no repetition see [Wiki] Mixes, Radio, Shuffle, Shuffled, ... What the random).
Same for the forgotten stuff, for albums there’s the Rediscover albums row that have the proper algorithm to fit that need, something random does not really fit either.
That’s really why the template insists on the needs not the solution you think are the one you need.
So yes I can add the random songs, but I suppose the rediscover songs is more important and should be there too.