aint no one ever played MGS2: Substance?
with the Snake Skateboarding?
or Snake Tales where it replaces Raiden with snake for the big shell mission
and gives you hella different types of stories kinda like MGS5 Ground Zero and even brings back Meryl Silverbrough
or even the VR missions that let you unlock hella different constumes for each character (Snake & Raiden) and even lets you play as the Ninja
this alone fixes alot of the issues people had (Raiden on Bigshell)
You can play through most of it with snake through Snake Tales, plus they added hella new "What If" scenarios with snake in it... its like as if Raiden never existed