I guess my main point of the simple vs complex wasn't so much to say that complex design is always a bad thing, but that overdetailing can ruin or seriously uglify an otherwise decent design. As for the megas, a lot of them really aren't all that complicated. Venusar gains very little, Ampharos stays the same bar the luscious locks and red hair pearls, Mawile just gains a second mouth and some more color, etc. In my opinion, Mega Lucario is absolutely hideous with that intricate mess of detail and gross color palette. Mega Beedrill isn't quite as bad, but not super great either. Mega Charizard X I think is really shitty, but that's more because it looks like fanart my 6 year old cousin would draw than an official mon, it just looks silly. I think too much, and too contrasting, of color is the bigger issue. Yes, Dialga and Palkia and Giratina have lots of detailed line patterns, but the color scheme is almost as simple as Snorlax! Dialga is made up of a grand total of two colors, Palkia of three, and Giratina of only four! But like I said, this is really only a factor of many, and no amount of simplicity or complexity is going to fix a shitty base design (looking at you, Probopass). Also, proportions are a huge part, too. You wouldn't give a scary monster big, doofy, round eyes. Anyway. I've spent too much time typing this on the shitter, my legs are asleep