Pics?? Have you seen my stuff? You're more likely to get a full-on 360 degree VR youtube video with shaders than pics! lol But, yes, there will be a video in my showcase for every step, including this. I have been looking up draconic evolution stuff. I've never made anything from it yet. I advanced so damn fast over my last couple of playthroughs that I wasn't expecting to be at that stage yet. I will definitely get going on that multiblock storage at least. I have a *really* cool idea for the location where I'm going to put it, but you're gonna have to wait for that video when it comes out!
I'm still designing the Wither thing in my head. I have an idea for it. It's going to take a little bit of testing, but I think I can make this work. Only thing I need to worry about is whether or not I'll need to use a system of sticky pistons to move fans in and out of blast range. This would have been a complete breeze on my old 1.7.10 custom pack because openblocks fans work through walls and can go in any direction, but I think I can jury rig something. Placing skulls, as you say, could well be tricky as well, but I think as long as sticky pistons can move the reinforced obsidian, I can rig something up that will work. I tend to not look up other people's work though, so it may well be a mess, lol
Worst case, I'll have it set up so you have to place them manually. The goal here is really to take advantage of the loot X so I get like 5-8 stars per kill. Again, this still relies on sticky pistons working on the reinforced obsidian. If they can't move it, then I'll have to improvise something semi manual.
Good lord, I need a week off now.