Ha yea, I basically create one base per forum post so I feel your pain. My workaround for this was to create an easy hotkey to delete the leftmost fields. Overengineered? Definitely. Helpful? Very!
Hi,
a partial workaround is to create a new field in any of your tables, select 'Link to another record' as type, and scroll to the bottom of list to '+ Create a new table', type a table name. You will get a new table with one record and two fields: 'Name'(primary) and Linked - the only field to delete.
If you need to create several tables, you can also run following code in script extension, changing names and types according to your needs:
let tables = ['table1','table2','table3']
for (let tab of tables) await base.createTableAsync(tab,[{name:'Name',type:'singleLineText'}])