Ashley , allow me to offer a contrary perspective on why uptake has been slow -- Outside of the people who already use Construct 2, nobody at all knows you offer it.
I've had a particular game concept in my head for a very long time. The concept is multiplayer by definition, you can't really make it singleplayer and it wouldn't be any fun in that environment. Every few months, I would relentlessly google to see if an engine was available yet to hobbyist non-coders that would allow me to complete the project.
It was only on a whim, after exhausting virtually all of my googling, asking in relevant forums, etc., that I hopped onto the Construct 2 forums to think about single player projects (after not having paid any attention to you guys for years) and discovered through a random blogpost of yours that you had added multiplayer support several months earlier.
If you guys want projects to make use of it, there are so many things you could do to actually get the word out. Banner ads on sites: "BUILD MULTIPLAYER GAMES WITH NO CODING -- CONSTRUCT 2!", advertising on places devoted to systems like RPG Maker and MMF that also attract hobbyists that don't attract multiplayer support, buying a clickbait-y site http://www.buildmultiplayergames.com/ and redirecting it to Scirra.com. Press releases sent to Kotaku and Escapist and MMORPG.com and all of the other major gaming news outlets.
The issue is not that people don't want to build multiplayer games with C2; it's that you built a Killer App and then haven't marketed it in the slightest to the people who might be interested, you've only looked at the people who use C2 already and their adoption of it.
This is not an attack or even a criticism really, just an explanation. I am the quintessential example of someone who has been *dying* for someone to make what you've made here, for ages now. Your target customer for a feature you spent tons of time on, someone who was relentlessly googling to try and find an engine that does what C2 now does. And I couldn't find it by searching, I only happened upon it randomly on a lark.