In our 21D, the secondary pedestal table can be used at the sofa and between the rotated Sprinter seats. But that table is pretty small.
Before our last road trip, we purchased a 48"x24" folding REDCAMP table. We removed the pedestal and wood table top - and stored the folding table in the closet (it's smaller - 16"x24"x4" when folded).
When the table is set up - it provides more usable space when the table is set up. When we play a board game on the dinette table, we can use the extra table for additional table space.
And, the folding table is lighter.
If you're looking to increase table space in your D - here's a
link to the table we purchased.