If one has a steel frame which is electronic only - i.e. it doesn't have cable guide bosses - is it right to assume:
a. that such bosses can, in theory, be brazed on;
b. that in practice doing so would probably necessitate a complete strip and respray; and
d. that therefore the whole process is probably uneconomic?

My apologies if this is a stupid or very basic series of questions.

TIA