Ontario Highway Traffic Act

It also sounds like the officer was using Lidar, which will give a range to the target. It's advantage is that the officer can pick out a single vehicle in heavy traffic which appears moving faster than the others.

OTD Legal, you left out the Part I summons which is a quite common way to seek an increased penalty above the normal set fine, without having to have all of the extra paperwork of a Part III Summons.

It's not just about training and qualifications. Just because someone has completed training or a course, doesn't mean they are competent in that field. You'll have an opportunity to ask the officer about their training when you cross examine them. The JP can then make a decision about where the officer was qualified to use the device.

In all likelihood the prosecution will seek an amendment to the charge if they discover that the wrong subsection was used. It will be up to the JP whether to grant it or not.

Based on your description of the incident, there won't be any witness statements, you'll get a copy of the testing instructions for the speed measuring device and it's not likely you'll get proof of the officers training and qualifications.

No signature on an electronic ticket is not a fatal error. They aren't required on e-tickets
No drivers licence number on a ticket is also not a fatal error. How else would you give someone a ticket who has never had a licence?

The big issue is that you got someone elses ticket and possibly someone got yours!

You can't "get around" the definition. An off road vehicle is an off road vehicle. It doesn't matter how you dress it up, it's still and off road vehicle.

Your laundry list of disclosure certainly didn't help your cause. You probably found it on a paralegal site that is notoriously out of date. Most of the items would of never exist for a speeding charge and some have been decided by the courts as not being relevant to disclosure. Some are also usually part of the officers testimony.
Based on the ...

Until such time as you request a trial and receive your notice, it's unlikely that you will get disclosure. You don't make this request at the police station or from the police. It's done through the prosecutors office.

They actually aren't "excluded form Ontario law"
The GPTR simply allows the issuing of Provinal Offence notices on federal property in any Province and says that the provinicial laws where that property is located are in effect.
A common example are the offence notices issued on Canadian Forces Bases.

http://laws-lois.justice.gc.ca/eng ...

If the outstanding fines are prohibiting you from renewing your licence plate, it's likely that it's from a parking infraction, or red light camera.
Outstanding fines issued under the HTA result in a suspension of a drivers licence.

You need to go service Ontario and/or your local court to determine what the fine is.

Without a valid plate ...

Insurance MAY be affected. Not will. You'd have to check with your broker.

Wow. Not a huge fan of this penalty system.

If you were in a plaza lot, it wasn't likely a bylaw officer representing the municipality. Likely a private security firm that has authority through the city to issue parking tickets.
Section 15(4) and 15(5) of the POA is very specific about how a part II can be served:

Service on owner
(4) The issuing provincial offences officer may serve the ...

I'm just curious as to where this ticket was received?
Also, disclosure comes from the prosecutor. There should be no need to contact the issuing police service.