The Little Tokyo stop had no stairs or escalators before 2023, since it was at grade then. Do you mean a different stop?
Also, the busiest stations with huge escalator length, like Union Station or Wilshire/Vermont, have so much open space that escalators are rarely a bottleneck in my experience. 7th St/Metro station is crazy crowded, but the escalators are short and people usually give you room to run down the escalator.
The only station I worry about for future congestion is the Grand Ave station, which has no escalators, but is so deep that you have to take an elevator since walking stairs is not reasonable except for emergencies.