I actually don’t have any Morningstar products yet. The plan so far (when they are available again) is to get an ML10X to hook up all my pedals to, which are:
• Electro-Harmonix - Green Russian Big Muff Fuzz
• TC Electronic - Vortex Flanger (Stereo capable)
• Boss - DD-500 (Stereo capable, MIDI capable)
• Boss - RV-500 (Stereo capable, MIDI capable)
• Boss - MD-500 (Stereo capable, MIDI capable)
• Boss - EQ-200 (Stereo capable, MIDI capable)
I want to utilize the stereo capabilities of all the Boss 500-pedals so these will each need to take up one of the five stereo loops of the ML10X. So that’s a total of three loops, leaving two. The 3 other pedals will be hooked up in mono so two of them will be able to share one loop while the last pedal will take up the final loop. So basically, as it stands right now one ML10X will be sufficient for my current needs.
(Side note: I also have volume and wah pedals but they sit outside of the loop switcher)
But who knows what the future holds, perhaps I will want to add more pedals further down the line and that’s why I was wondering about the possibilities of connecting two ML10X’s to each other in order to gain five more stereo loops. So it was simply a matter of wanting to know whether or not the Morningstar system could be expandable in the future, should I want to.
(Side note: From what I’ve understood you can’t program such a setup to activate one pedal hooked up to one ML10X and simultaneously activate another being hooked up to a second ML10X, which means the ML10X isn’t really expandable. If I’m wrong about this then please let me know.)
Then the plan is to use an MC8 as the actual switcher to activate different sets of pedals, as well as different settings on those with MIDI capabilities.
But this project doesn’t stop there I’m affraid, as I also need to be able to control channel-switching on my amps, yes that’s plural. I actually run a Wet/Dry/Wet rig. This means I have a total of 3 amps + one external preamp pedal (a Victory V4 -The Kraken valve preamp). The Kraken is hooked up through both the FX-Loop and the front of my main amp (Orange TH30). This allows me to either use the 2 channels of the Kraken or bypass it completely and use either of the two channels of the Orange, giving me 3 dirty channels, as well as one clean channel.
Both the Orange and the Kraken have TRS-inputs for remote switching between the channels and these needs to be hooked up to 2 Morningstar Relay Interfaces, which in turn are hooked up to the switcher. This will allow me (as far as I’ve understood) to program the ML10X to not only activate a specific set of pedals and settings on those pedals with MIDI capabilities but also switch channels with just one step on a switch on the MC8. For instance, whenever I’m using my fuzz pedal I’m running it through the clean channel of my Orange so if I want to activate my fuzz I obviously want to simultaneously activate the clean channel of the Orange. A Relay Interface will allow me to do that.
I then also plan to add an expression pedal to the MC8 in order to be able to seamlessly increase or decrease the amount of dry signal going from the Boss 500-pedals to my two wet stereo amps. Or to simply control the amount of delay or reverb.
I know, this might be a bit much to take in all at once but hopefully it will give a more clear picture of what I’m trying to do and why. 
I have a real monster of a rig and I simply want to maximize the use of all my gear and be able to program my board to do whatever I need it do with a simple tap of a switch.