Hi Kes, and yes, swapping the entire left-side aluminum box containing the charger and DC-DC converter is a fairly easy job. (I got one from a breaker's yard). The coolant hoses are a straightforward connection, but as I recall, you have to remove the two plastic gland nuts along with the HV wires. Landing those wires back on the correct spot is the main thing that could go wrong, as there's nothing like 360 VDC of reversed polarity!
Do it with the 20A fuse removed from beneath the inverter inspection plate, and the main pack service plug will be redundant.
2012 i-SE "MR BEAN" 105,400 miles
2000 Mazda Miata EV, 78 kW, 17 kWh
1983 Grumman Kurbwatt EV,170 kW, 32 kWh
1983 Mazda RX-7 EV 43 kW 10 kWh
1971 "Karmann Eclectric" EV 240 kW 19 kWh
1965 Karmann Ghia Cabriolet