shotonline.com already has those targets on their driving range. You also get small credits for "dinging" shots and sinking putts on the practice putting green. They've used levels successfully for years but then again their entire environment is much more elaborate than here. More courses (all fantasy), better interaction between players, green fees to play, club wear & tear & repair, proper movable camera angles. Your "career" is much more real life at shotonline but WGT is far superior with graphics quality, real life courses and tournament development.
It's a matter of what you're looking for in your online entertainment and who provides the closest thing to what you're looking for.