So I finally got this figured out. For anyone else interested, the MySQL command to change this value is this:
UPDATE chv_variables SET variable_value='your_new_value' WHERE variable_name='id_padding' AND variable_id=1;
However, changing t didn't make that much difference it seems.
By default, the value is 999. Even after changing that as high as 12,000, I only ended up with three character link IDs instead of the default two.
I'm not sure how this padding works, but these link IDs should really be 16 character (yes, I know I previously said 12 character... Maybe 12 character hard minimum with a 16 character default minimum and a... much larger... hard max?) randomly generated alpha-numeric strings at MINIMUM, and ideally, that should be configurable in the Web UI.
Side question - when will my posts no longer need to be approved? While I haven't posted much, I've only been a member/signed up since July 2017... It's kind of getting old...
Edit: Changing it to 120,000 resulted in a four character ID.
Edit2: I changed the value to 2400000000000000024000000000000000, which gave a better (but not ideal( value of BnMLrv72JgsP for the album, but I think that broke Cheverto, as I got 'that page doesn't exist' for that album. There's got to be some better way to generate long random strings that won't break things. Micro$oft Office 365 nonsense makes crazy long strings for files and whatnot - not that I'm a fan of Micro$oft at all - point being there's got to be an easy way to do it.