The diSPIM is inherently modular and easy to modify. Here are some variations on the basic diSPIM system already being used:
single-sided system with high-NA imaging objective (e.g. same objective used for lattice light sheet)
moving sample through fixed light sheet with XY stage
emission filter wheels for better channel isolation
turret on bottom for different objectives (useful especially when doing photomanipulation)
photomanipulation from inverted microscope objective using ASI scanner and
Projector plugin in Micro-Manager
gated laser illumination in certain range of slices to avoid stimulating photosensitive section of sample
“anti-striping” or altering the angle of the beam to avoid shadowing effects
Other variations are in development by ASI, Hari Shroff's lab, and others. What do you want to do?