I don't want to poor cold water on your idea, but I think it is highly improbable Cisco Meraki would do this.
For a start the similuation environment would need to be able to talk to the Internet and the Cisco Meraki cloud. To create such a pretend simulation environment, and collect all of the information that the dashboard needs to work would be a huge effort.
Personally I would prefer that this "huge effort" (aka development time) was put into furtehr extending the existing products, such as IPv6 support, IKEv2 support, Anyconnect support, etc
Even then, I think it is more likely that Cisco VIRL would be supported ahead of Packet Tracer, as it is at least a virtual simulation environment meaning it could run the actual code - but I also think there is zero chance of that happening. There isn't even a VMWare version.