The “3D Onion Skinning” add-on for Blender 4.5 lets you preview multiple frames in 3D to study timing and spacing. Works with meshes, curves and instanced collections.
If Blender's quirky and standards-resistant user interface has been putting you off from working with it, it's time to take another look. Masquerading as a bland point release, Blender 2.8 (currently ...