Should LE allow for shorter and longer cert life times?

[rg305]

@Osiris

On the item of “dynamic” or “scaling” certificate length: what problem would this fix?

@jsha

Let’s Encrypt’s total capacity is bound by its OCSP signing capacity, and LE is required to sign OCSP responses for each certificate until it expires. Shorter expiry period means less overhead for certificates that were issued and then discarded, which in turn means higher total issuance capacity.

Many folks don't even bother to use the staging system.
How many new certs are issued before the one real cert is actually used?