To Breed or Not to Breed, That is the question??

Don't breed.

There are enough nice horses around to bring another foal onto this planet, especially if you don't really care for another one. If you were set on a particular goal, had the means to carry thru to that, or were making money then there would not be any point.

Would be a better idea to go out and buy what you want, instead of hoping to get what you want.

agreed

There are way too many horses out there now as there is and you could easily find a filly with all the traits you want for about the same price or less than it would take to get that foal on the ground and raised up to weanling age. Are these bloodlines really all that special other than pure emotional attachment you have for them? The traits you describe - good conformation, trainability, sweet disposition, color, etc are all things you can buy.

If you have to ask, then no. I agree, you're better off buying a nice filly than breeding and taking the risk.

Please answer the following:
1)What makes the stallion and mare breed-worthy?
2) Do they both have good conformation?
3) Are they both free from any health defects?
4) What is your goal from breeding these two, besides to get a certain sex?
5) Why did the one foal pass away? Was it an injury, or a birth defect?
6) How is the other foal doing? Does it have good conformation? Is it doing well in its training?

Too many people breed because their "mare is sooooo sweet" and want a baby from her. That's not enough reason to warrant breeding. Too many people "just want one baby." Yeah, well when say 50,000 people breed their mares "just because it's just one more foal, right?" and only half of them can find homes for them if their situation changes, that's still 25,000 UNWANTED horses.