Lockring is positioned against spokes and also it´s spinning the other way round, you it´s tightening up if anything(except tensiles and maybe acs???),Yes hearing would be problem for mod, not so much for stock, I found 21:18 the best ratio for me, right between 18:15 and 18:16. This whole weight distribution argument is nonsense, today´s bikes are soooo rear and heavy anyways with carbon bars, forks, light and narrow rims/tires. So it´s durability, better engagement and choice of much stiffer cranks than isis vs weight distribution and harder to get gear ratio. To me this change was soooo worth it and I won´t ever go back if I don´t have to.