Scribe Tower design question

Attention Scribe libraries (and future Scribe libraries):

We are considering switching from a custom-built case for the Scribe tower to a pre-fabricated model. This would reduce the time needed to build each tower, and would hopefully be a more reliable supply.

However, to fit the tower into the case we are evaluating, we would need to reduce the height of the shelves beside each cartridge port. Most likely, they would no longer be large enough to fit a mailing container, only the mail card itself. Currently, it's about a 1.6" gap between shelves, easily fits a 0.75" high mailing container. Depending on how many slots we try to fit in, we would probably be looking at a gap right at 0.75", which would obviously make it tough to fit a mailing container in there.

Please let us know what you would think of this change!

For current Scribe libraries: do you tend to load the card into cases while the cartridges are still duplicating, or do you wait until duplication is finished? Do you generally use all 15 cartridge slots in the tower, or do you frequently run smaller batches?

For future Scribe libraries: if you had the option, do you think you would prefer the taller shelves, or smaller ones? Would it be worth having fewer ports to allow mailing containers to fit?