If you take away the oil you just kill the sport as such - you will end up with bowling's origins, 9 pin Kegeln, where balls do not need any traction or side rotation and are just played down the lane out of the open hand. This is IMHO not a solution.
One problem is IMHO that the performance gap between pro bowlers who compete on demanding sport shots (and top notch conditions) and average Joe on a THS is not perceivable. Ever stronger balls make those happy who do not have a sound release technique and just want to see the ball hook, the more, the better. If things become demanding, it is always someone else's fault (too much oil, too little oil, blah...), but never the player him/herself.
Another issue is scoring as such - here in Germany we currently have the discussion in the background that official scoring is supposed to be converted to the simplified Global Scoring System, in which each frame is counted separately (Strike = 30, Spare = 10+score, open = frame score, no extra score in the 10th frame). I do not see any benefit behind this, except that scores, esp. of mediocre and beginner bowlers, will become highly inflated, because the system dramatically favors single strikes (and consistent chains), and the gap to good players will become much smaller. I am not certain about the outcome, and do not like the idea. This move will certainly add appeal to occasional players and beginners, but it won't do justice to "better" players. Any similar development/discussion in the USA, too?