Please make the crafting materials drop at an even rate for each. Also, a higher drop rate for Invader materials over the other cluttersome items and standard materials wouldn't go unappreciated.

Now that I only need one more item from a certain Invader, I find it absolutely scandalous that after killing another 200 of them in all sizes with all different levels of sustained attacks, half with an offense boost, half without, and having spent around $50 and 3 million energy in the process, I still haven't gotten enough of the material to create a legendary item. I have at least 2 legendary grade items of every other material from this Invader, so why am I getting stonewalled from this last crucial piece?! The complete lack of this necessary item seems intentional at this point and that's just sick and twisted. 😜 How is a player ever supposed to complete a set of anything legendary? Please, please, change this!