You do not have to display every figure you own at once. A rotation can keep an overcrowded shelf readable, provided the pieces off display are stored appropriately and you can handle them without rushing. The goal is to enjoy the collection, not create a compulsory schedule.
Choose a reason to rotate
Try one change at a time: a different central character, a series grouping or a new color balance. Photograph the current layout before taking it apart. That gives you a reference if the new arrangement does not work as well as expected.
Keep enough space for each base and projecting accessory. Rotation should solve crowding rather than simply move the same number of pieces into a different tight formation.
Prepare the destination first
Identify where the outgoing figure and its accessories will go before lifting it. Use its original protective inserts when appropriate, following the product's packing instructions. Do not force a new pose or accessory arrangement into a cavity designed for another configuration.
Label the box or storage location in your inventory. Keep the base and removable parts associated with the same item, especially if several figures share similar colors or character names.
Handle less when the design demands it
A complex piece with thin effects or many small attachments may be better left in a stable position. You can change the figures around it instead. A rotation is optional; avoiding repeated difficult assembly is a reasonable reason to keep one centerpiece fixed.
Before adding another item from Super Saiyan Sphere's statue collection, decide whether it has a permanent place or belongs in your rotation. That small decision helps keep an expanding collection manageable without making every new purchase compete for the front edge of the same shelf.
Related guides
How to Arrange Anime Figures on a Small Shelf · One Character or a Whole Series? Choose a Collection Focus