Hi, this patch is based on this [[ https://blender.community/c/rightclickselect/3Wgbbc/ | RCS ]] and [[ https://devtalk.blender.org/t/modifiers-improvements/9788/11?u=metinseven | devtalk ]] proposal by @MetinSeven
This changes the defaults of both subdivision levels to 1 and adds new lock feature to 'match' the viewport and render levels, internally it will really just use the viewport levels for both and hide the render levels while this option is active.
UI really needs some attention and feedback from UI team.