If you haven’t explored Jared Healy’s @jaredfhealy ExtraBuilder extra yet, do yourself a favor and check it out.
Combined with @bruno17 Bruno’s amazing MIGX you can go from idea to package with custom db tables to custom manager pages for managing your new table data in minutes without really getting into the weeds. This is a workflow I’ve been looking for in MODX for a long long time and it’s really just awesome.
I may try to do a walkthrough video of how to make this work quickly sometime soon if there’s interest. Jared & Bruno may have good tips or demos on this as well - I’m just a happy end user