[Diogenesis]

The NEJM and other articles reveal that the death rate
increases by ~1.8 per decade of age of the individual afflicted.

Furthermore, impt. key questions remain including
how long "recovered" individuals shed virus (if they do),
how significant is the parallel cockroach vector system,
and what is the longest time of incubation (prob. > 10d).

[TaxRelief]

impt. key questions remain including how long "recovered" individuals shed virus (if they do),

They have had difficulty obtaining virus swabs >72h after onset. Stool cultures may be useful for up to 5d from onset.

how significant is the parallel cockroach vector system, and what is the longest time of incubation (prob. > 10d).

The probability that the incubation period >10d, is I believe, 0, using specifically SARS data. However, when most viruses hit larger groups there are nearly always silent carriers or super defence systems that hold of infection for longer periods.
"Parallel roach vector system" has pretty much been ruled out because it cannot deliver adequate dose of virus.