All of Martin's Art work is done in DesignCad, its partly why there are often components in the kit that really should be castings but are laminated etches because Martin is very good at drawing in CAD. Slide bars were the most annoying thing on the V2.
I think this is a subjective observation and is really down to personal preference.
I’m a very big fan of the MOK kits but I would prefer it if more of the valve gear was laminated etched rather than tedious cast brass or nickel silver. I would also like more of the non-functioning castings to be in white metal.
For me, I think Finney kits have the right mix of WM against lost wax and etched N/S against etched brass. I also like that the metal is not overkill thick!
The only real problem [and this applies to most kits in 7mm as far as I can see] is the lack of isometric drawings in the instructions. I find the MF instructions very hard to follow. And don’t even get me started on photographs used as a format for instructions. But again this is all subjective.