When Do You Introduce New Ideas, VS. Getting Better At What You Are Doing Now?

Many start-up companies are plagued with new opportunities, and the real challenge is should a CEO introduce these to the company when they are not tested and just assumed. Moreover, will the new service or product frustrate current operations. To me, one of the most important things for a CEO is measuring operational success. Introducing new products and being creative is somewhat of the easy part, but getting better at what you do is like training...

And we all know that training is/can be the boring part... So when would you introduce products or services to an organization? And how would you do it so that you don't hurt current operations?