old shows given new revamp, but no new name

Old shows being given new life, it seems to be ongoing. Have Hollywood ran out of ideas that they have to pull out old shows and redo them? Example such as Battlestar Galactica. The old show was successful although the show's backers cancelled it for reasons related to ratings and money. The new version is a reboot, alternate universe type that is dark and grimmer than the original. It even ruffled some fans when they turned Starbuck into a babe. Other shows such as Star Trek was given the same treatment because of ratings. I like the TNG crew. It is just that they have too much talks and less space battle. The new show although have enough action, it trims off history that gone though the original series. Now they are giving the same treatment to V. While I don't quite remember the whole show since I was a kid when they show it on TV, the uniforms were cool, the lead cast was handsome and pretty. Hopefully it would be as close to the original. Isn't that the reason to use the old show to boost the new show? But if the plot stay the same then might as well watch the old show. If you change many stuff like the new Battlestar Galactica, then it doesn't seem right too, might as well a new name and new designs..... Tough call in a era when ratings will decide if you stay or goes.