Again, just from what I saw in that vid.
The MB has a large grease tray, very similar to Weber gassers. It funnels the grease into a small pan. I'm lining that grease tray with foil or else I have a nasty clean up job. I'm also putting foil on the manifold. Its a bit of job to get the MB ready to cook. The manifold does not come out nearly as easy as that Char-griller manifold, which also was porcelain covered. That would make easy clean up without having to use the foil. It also appeared to be much easier to take out and put in place, it even had two handles. I liked how the CharG funneled grease into that tube, that then ran into a grease pan.
I also liked how the CharG manifold had small openings near the firebox and the openings got larger, the further away. That's gonna come closer to get even temps across the grate.
For smoking , the cast iron grates on the MB are useless. Its best to cook on the second level. The heating is far more even. And a drip pan on the bottom level is almost a necessity to keep from having grease fires on long cooks, or to save a clean up. There are people who make mods to the MB manifold so a drip pan could fit under the cast iron grates, but I'd just as soon put meat on the second level.
And being able to remove that inner liner on the charcoal hopper would be nice. I like to start with a new load of coals on each cook and load chunks of diff type wood in the hopper. The only way to do that on the MB is use tongs and dig out each piece of charcoal.