It's a matter of balance. No simple rule of thumb exists. Sometimes it results in a much better solution, great! Sometimes it's a new wheel but with more awkwa

It's a matter of balance. No simple rule of thumb exists. Sometimes it results in a much better solution, great! Sometimes it's a new wheel but with more awkward square-ish corners. Sometimes (and this is the worst because it's hard to explain) it is actually better but still likely has been a waste of the engineer's time - high cost vs low benefit, also often cooccurs with lack of team's capacity to maintain the new thing.