Is there really that much to randomize?
You can totally change the overworld layout, so you don't know where to go. Also you can change what monsters fight you where, and what the monsters do. Another thing you can change is the contents of chests being mixed around (I've gotten Erdrick's Sword a couple times in the starting castle treasury which you need a magic key for). Shops can be mixed around, but the prices are the same. The Fairy Flute/Erdrick's Armor/Erdrick's Token can be mixed around, so the item on the ground can be the armor instead (those 3 items mix together).
You can also make it so you get remake amounts of xp and money, the text is sped up too. When you learn spells can be changed, but it seems like you learn them all a lot sooner (lv15 or less usually).
What isn't changed is the prices of stuff, the dungeon layouts, and town layouts.
There was a tournament for it last month or so, you can probably find vids of it on youtube. Game should take 2 hours or less probably.