Repetition, Rhythm, Pattern and Lights
Do one hanging sign, it will be sparse, lonesome and empty. Tier it and do many - the result is abundance, innumerable and a demand for attention.Here, Repetition also lends to Rhythm. Rhythm is complex, subtle but easily perceived. It gives motion and fluidity to the space.
Pattern is used symbolically to represent people, and culture. Controlled light highlights the pattern and makes your brand space alive.
What is is your brand culture? Design a trade show booth that gives specificity to your brand culture.