Nice idea this new master case ! Well done Cooler Master !
Let's talk about dream parts (at least for me) for this new modular case. =)
I'm not sure it's already done, but velcro straps in the back of the case for cable management (http://www.pcper.com/files/imagecache/article_max_width/review/2014-11-21/R5_COMPLETED_2.jpg)
A big dust filter under the case with a possibility to remove it from the front of the case (https://www.youtube.com/watch?feature=player_detailpage&v=SRZIdbdcIiU#t=155 it's useful when you have a desk like this : (http://nobulges.com/g/2015/05/furniture-fresh-ikea-computer-desk-ideas-1371-with-black-desk-and-white-wallwhite-floor-modern-computer-desk-ikea-ideas-desk-lamp-clipart-desktop-pictures-for-mac-3d-christmas-pictures-desktop-1024x844.jpg)
Front panel that cover the whole case (no 5.25 drives) with an easy way de remove the dust filter (no need to remove the whole facade, just push and remove) : https://www.youtube.com/watch?feature=player_detailpage&v=T-Y1Cr_uJdo#t=477
Basically the same for the top of the case (push and remove), with the room for fans and/or radiators : https://www.youtube.com/watch?feature=player_detailpage&v=T-Y1Cr_uJdo#t=144
Some thumbscrews that stick to the case part (http://www.pcper.com/image/view/54466?return=node%2F62564)
Finally I hope for some Ã la carte way to buy this case from online store, it would be awesome !