It worked very well for about half the year
As would a Cessna 172 if you had time to spare.
Which is why I suggested, for all year round capability, you need a more capable aircraft, as was hinted at by the OP when he said something around $1m......
I don't see that sector of GA changing much in the next 10 years. It is the puddle jumper market that will disappear as owners find paperwork more difficult to comply with, Avgas become too expensive....... Finding a Mooney and flying it around Europe will, I hate to say, be a memory of things past rather than a practical means of travel in the future.