By default Sonarr allows to automatically DOUBLE the file size of first and last episode in the rare chance that the season premier or finale is longer than normal. I would simply request that there be some form of “checkbox” or similar to optionally allow Sonarr to FIRST attempt to download a file within the regular file size arrange. If none are found, only then DOUBLE the file size limitation.
I see a lot of unnecessary wasted HDD space due to 1st and last episodes and also unneeded upgrades due to this.