It seems to me that when you put additional burdens on a system you are just asking for trouble.
They can do any number of stress tests and engineer something that “Should” be OK, but unless they put the money in the quality of those parts, it’s likely to fail.
Personally, I prefer simplicity over complexity.
I can “Hot wire” almost any car on the road today, but that is getting more and more challenging as our cars ignition systems are more integrated with so many other aspects of its operation.
They should be using a quality double roller chain and include a feature in the vacuum pump such as a pin that can break if the unit locks up... or run the vacuum pump off of the undriven end of a camshaft...or both..
Simple is MUCH better ,, these cars are very crowded underhood and there is quite a bit of heat to get rid of... personally I’d go without brake boost it’s not needed on this car.