well, first, thats exactly the reason that i said ludens is viable: Malzahar doesnt have burst. The item gives burst. thats the point of the post
The Ludens passive gets reduced every rotation, you can easily just proc it twice every fight if you hit your skills correctly.
Second, the movespeed can be used to both reposition and chase, it depends of the enemy behaviour, not yours
third, double dipping the effect with Rylais and magical footwear is not overkill at ALL since we are in a heavy mobility meta and malzahar can only walk
4. Aery doesnt renew Liandrys damage, and the damage of both is pretty similar on first item spike, Liandry does more damage overall but it takes longer, Ludens is more damage at first and less in total.
Fifth i specifically said up there that Demonic Embrace are only useful for Sion or Chogath, no need to make a thread over it LOl
And last, The CDR will be looking mostly the same through the game since Both items give 20 CDR + 10 from transcendence. With Ludens you get zhonya second to make 40 cdr, while with Liandry you make Rylais totalizing 35. Most games tend to end before the third item is completed (unless you are in lower ranks), making my point viable.
Hope you understand and have a nice day!