First, full disclosure: I'm not coach of any sport. I have a young son (soon to be 7) that is athletic, active, and loves baseball.
I've always believed some sports help the development of skills of other sports; more so in the main development/growth ages of say 12 and under. For example, soccer for foot quickness, balance, conditioning; basketball for eye-hand coordination, conditioning; and so on. Agree? Do some HURT the development of certain baseball skills?