Not sure if I misunderstood also, but here's another try: The sides of the drip pans and the opposing stove sides can be easily cleaned when the drip pans are removed. While Wolf may have changed the configuration, as with most pro style ranges with open burners there is a large drip tray beneath the entire range top that catches spillovers. In 6 years of daily cooking we've only had a couple of spills ever reach the tray, and it's on rollers and slides out for easy cleaning and removal. The area below the drip trays is pretty sparse: burners, gas lines and some supports that we clean out every year if we think of it, but nothing accumulates that remotely could catch on fire. Since you seem to have some major safety concerns, then perhaps a sealed top would be more appealing. However if you have a major grease/oil spill on a sealed top, and the oil is pretty hot and an on burner is able to flash the oil, you've a real kitchen fire on your hands. An unlikely scenario in my estimation, but still possible.

Its possible there is a special tool for this, and that only tech get them. Car companies do that sort of this all the time. Just a idea though...i don't really know if its true.

I've used cast iron griddle plates on standard burners and they work ok. Nothing like a real griddle but for me, the grill would get more use. We would only pull out the griddle if we had guests staying with us and we wanted to make a big pancake breakfast. For regular Sunday morning pancakes, we just pull out the kamal. The advantage of a real griddle is that you get temp control rather than just low-high flame like you get on a grill or standard burner.

Sure, its possible. But, think about work flow before you do it. Do you want to be working at the range top while someone else wants to reheat something. It might make for a traffic jam.