Feature request: Improvement for utilizing Q key option

There are two obstacles against using Q key option and needs improvement:

  1. Needs more margin of both edge by custom setting: we need to set more margin of both end of a subtitle because one of both edge of a subtitle are often cut off and lose some of a subtitle when we input S key.
  2. Needs to combine multi-subtiles to one unit by checkbox: Whenever a sentence are made of multi-subtitles, Q key option becomes useless. So when I learn on Youtube, I like using mobile app instead of LLY but there is no choice but LLN on Netflix.