Please make it so, when turning two T9 horses into one T10 horse, the resulting T10 inherits the stats of one of the parent horses selected manually by the player. I say to manually select the stats because some players may consider stats other than SPEED to be more important.

For example, this is my tier 9 pegasus:

(I know the break is not 150.1% but I have +9 stirrups for that)

Why would I ever want to destroy this horse for a T10? T10 is supposed to be an upgrade but for me it would be a downgrade. It would be a crime to sacrifice this pegasus and make it a T10. The odds of getting a T10 with better stats are extremely low. Even if I bought an extra 2 pegasus to make a T10, I would still have no reason to use the T10 over my T9 because the T9's stats would be far superior by 99% odds. Please make it so we can inherit these stats onto T10 horses and then I'll consider getting a t10 over my amazing T9! ^.^

why would you want to keep those 165?

165.4 SPD is a very high and very difficult speed to get for a t9 pegasus (t10 included since they share the same algorithm for stat rolling as t9's). This stat makes this horse statistically the top 0.114% of all T9 and T10 pegasus that can exist when we just consider speed. It would be a downgrade to replace this horse even with a T10, which will very likely have far less speed than this horse. This is why I'm hoping they will make it possible to inherit stats from t9 to t10 through the current t10 generation system so that people that have a gem of a t9 horse won't be downgrading by going to T10, which is supposed to be an upgrade.