2 years but here's my thought: some of the randomness you have mentioned are actually predictable and, even controllable. Of course I had to bear numerous (1,000 times of) resets and retries, but that's the nature of speedrun/RTA anyways.

If I am to suggest new categories, because I have forget one by myself and run some already, they are...

• Local Play, {Map Name}, Checkpoint {Faction} Any% NoDeath

→ mostly Tideway Security or Ministry Security unless you want to play other maps (like me). Death of player actor revokes the run, no matter the cause is.

• Local Play, {Map Name}, Checkpoint {Faction} Any% Solo (PC Only)

→ PC Only because you need to have certain config in Game.ini to remove friendly bots.

• Local Play, {Map Name}, Survival Any%

→ Pretty self-explanatory.

• Local Play, {Map Name}, Survival Any% NoCrate

→ (I haven't finished this yet)

• Co-op, {Map Name}, Survival Any% (PC Only)

→ In a community server with official/regular config, speedrun of multiplayer may be possible.