Sure - why not? You describe one of many options that lead to shorter wires and simpler construction. Both are desirable (IMO) and yes, we have better methods, materials, and tooling than 50 yrs ago. Many modern amps use these ideas and more. What you describe reminds me of the THD amps. They cut circles in PCBs for tube socket pins and short (1/4") jumpers made connections. Worked well, as far as that goes. Unfortunately, their PCB's had excessively long traces on them that negated many of those short connection benefits. Construction is complicated in that everything affects everything else and good construction requires careful planning and weighing of options to find an optimal combination of compromises.