The shop is offering up to 70% discounts in order to strengthen/facilitate/booost sales.

Some retail shops have increased/ outnumbered/shifted their focus towards fast change of trends and costumer demands.

My team was outnumbered/exceeded/augmented by the number of participants in the other team.

The end product surely enhanced/exceeded/added the manager's expectations.

Not going to basketball practices will surely strengthen/stop/lower your skills.

I have heard of stories about people being enhanced/upgraded /augmented to business class because of defending fellow passengers from nasty ones.