With weakening frappuccino sales in the recent quarter, Starbucks (SBUX - Get Report) is reportedly testing lower sugar, lower calorie versions in 600 stores. 

But to get Starbucks shares jump-started -- the stock is down 2.2% the last two years -- the company will have to do much more than create "healthier" frappes.

For instance, Starbucks should consider making its rewards program more generous, introducing a lower priced range of coffees to compete with McDonald's (MCD - Get Report) and halt efforts to add new complicated drinks to the menu. 

What TheStreet's founder Jim Cramer is saying about PepsiCo (PEP - Get Report) shares.