Possibly allow a totem of mob controllers on the higher tier factory to allow you to spawn more than one mob.

This is a good idea. Not only will newcomers assume this is what the mod does anyway, but servers might want to disable traditional grinders. The real problem there is that often you only need a little bit of a number of things; the traditional small dark room with a grinder. If players have to start making a grinder for every mob...

Perhaps a region controller that can take the place of the mob controller. The region controller completes the structure, but starts out blank. It monitors spawns (or attempted spawns, if possible) in an area until it has enough data to set up a mob table with actual percentage chances. Kind of like RT Tools Dimensions absorbing time or weather. It takes extra time/energy and can't be moved without starting all over. (Unless a mod can move the entire structure without breaking it.)

Alternatively, have a mini-factory structures that turns into a mob-table prism when it's done.

Last idea: I've seen mods intercept items before they appear or generate wood when a sapling attempts to grow. Can something be done that intercepts mob spawns in an area and generates the loot instead? Kind of like a cross between a magnum torch and peaceful table.

Another option would be a different prism, that contained multiple mobs. That would mean that the current logic for handling the position of blocks would not change. All that would be needed is to handle a list of mobs coming back instead of just one.

I would say go with an advanced prism which can handle multiple mobs. I would love to have just one mob multiblock instead of having always reverting to Cursed Earth from Extra Utilities.

I've been considering allowing stacking of mob controllers on the factory. However that is going to take some code rework to happen. But maybe, eventually.

Anything that means I don't have to build multiple factories then I am happy lol.

Is there any update on this?

just used this mod for the first time, what charlesbevans said is exactly what i was thinking about this mod

also another way to maybe do this is to have an inventory where we put the complete ender shards in for what we want to spawn (easy to add/remove what we want)

Sorry, this was hidden way off down the issue list.
Basically it is a lot of work to get Woot to support more than one controller and I still cannot think of a nice way to do it.
I have seen a few YouTube videos of people making controller switchers so that they can cycle through different controller to get the same effect.
So it might happen in the future, but probably no time soon.

Hi there,

Maybe this is unintended, but you can stack several factories onto each other with the same input/output/power supply (See screenshot). This already comes close to a multi-mob farm. This may help to programme an actual multi-mob farm.

It never actually occurred to me that you could stack factories, but then it does give you that extra distance to find the input/output/power. So unintended, but I've got no problems with people using it that way :)

Woot for 1.14(?) will include support for more the one mob controller on a single factory - currently the plan is for up to 4.