I'm afraid I haven't got any experience with re-tipping. Sorry.Yes, lo output mc's are still the best way to get ALL the music off the vinyl, but choice of cartridge must be considered in the context of the phono front end (table, arm, step up), as well as the context of the system as a whole.
One place where a blending of lo output mc and moving mag cartridges takes place is in the Audio Note IQ3, which is a moving mag cart, but uses the stylus tip and square cross section titanium cantilever used in the far more expensive AN mc carts. It creates a very interesting middle ground.
There may be other examples of this that I'm not aware of. Anyone know of any others?