I built my table specifically to build my kitchen cabinets. One thing I did was to put 1" aluminum angle all the way around except leaving the corners open to sweep sawdust and dirt. I have 3/4" plywood topped with 3/4" MDF. I sandwiched the angle between them leaving 1/4" above the table. I made sure the angle was square. This made it easy to build the face frames square and doors square. I initally built this just go make my cabinets, however it keeps things from falling off and provides a square and straight edge. Maybe not for everyone, but I like it. There are a few times it gets in the way, but to me benefits out weigh the negatives.
When working I had more money than time. In retirement I have more time than money. Love the time, miss the money.