I think this is the right idea. The pendulum between having as many dependencies as possible and having no dependencies at all has flung way too far in the 'as

I think this is the right idea. The pendulum between having as many dependencies as possible and having no dependencies at all has flung way too far in the 'as many dependencies as possible' side. It is a major PITA when yet another random component breaks. Let us say that A can be done in B in, let us say, three man weeks. I would say it is worth it. The advantage is that A will never break because it is not there. Note that A also may break 3 years from now when everybody who knows anything about A has left the company.... B is now used in more places so people are more likely to have been forced to learn it so when the emulation of A break there is a better chance that people will know what to do. I see mostly advantages.