My solution would be the current CPL without IR, but with a MEP Class Rating, followed by all the boring procedural IF in multi-pilot simulators, doing the huggy-huggy CRM and MCC stuff at the same time, then the Type Rating and IR on the appropriate type.
Basic commercial level handling skills would be retained; hours of staggering around the NDB hold in a Seneca on one engine with some Oxford Don making a science out of non-precision needle following would rightly be condemned to the rubbish bin of history.