There are a bunch of ways to go about it; one of the things about VDMX is that it sorta depends on exactly what you are trying to accomplish overall.
Here is a slightly more advanced example that uses a Two Channel Mixer along with the “cycle” mode in the Media Bin. Note that I use the option to limit the cycling to two layers, adding a third overlay layer that is skipped by the bin.
CycleModeExample.zip (28.3 KB)
But if you wanted to further adapt the basic example I posted previously, you might be able to use the data-sources that are published by media bins as each clip is triggered (ie the normalized trigger index and the trigger index)
(when doing fades between still images on a single layer you can just use the vvmotionblur FX with a setting of like 0.98 and you’ll get slow fades, the trick from my LFO example is just nice because it can be used at a variable rate and trigger the bin next button automatically in the process)