Table for both 2-person and multi-person games
Have you considered rhombus tables? One alone is excellent for two people.

If you then require a greater amount of tablespace for four people or need to fit six-plus people at a round table, three rhombuses together make a hexagon.

The hexagon can then be extended by adding two more tables to two adjacent sides, allowing larger and larger subtables to be added, or crescents around a central game manager or leader to be formed.