Hi tony, glad to head you are doing a hex kit for the zx5, the standard screws are cack for racing.
The front brace does seem a weak point, but then something has to break in a crash i guess.. but i think a lot of people are looking for the front brace in alloy at the moment so it would definately be a good idea to make them.
I dont really get to drive my old cars much to be honest, in fact i barely ever drive an RC outside of a race track now.. I have the new tamiya hornet and will get the new tamiya frog, both which i want to race.. i prefer to look at them though!
I do have way too many cars at the moment so need to sell a few (!)