This topic does not have a easy answer.....one ultimate vs few good collections.
I agree that most of the functions are not very useful in this century. However, I do have a passion on minute repeater....it "talks" to you instead of you read it......plus the sound of Patek minute repeater is just wonderful.
Love the dial design of 5016, personally think that is the best design of all watches.....but to own it, I have to give up many other great Patek collections. Is that correct?
As to Chrono, I don't think I use it too much, but I had collected 3970 and 5970 already. Double spilt is also a fancy function only......but most of people believe 5004 is "must collect" piece for Patek chrono. So should I trade up 3970 for 5004.........if so, can't afford 5016. That is why 5078 comes to fill up my desire to own a minute repeater. The size is nice, Roman number and email dial, very subtle and elgant. 3939 is great in Breguet number and hands but a bit small.
So If you choose to own 5078+5004, perhaps plus a 5050 Roman dial, these three can be a good combination for a 5016....but will I still think about 5016 afterwards......tough!