The Pro-Cellophane Argument
Cellophane protects the wrapper from physical damage, prevents wrapper drying at the foot, and limits oil migration between cigars (different blends can transfer flavor over months of close storage).
For storage of mixed cigars (varied marcas, varied wrapper styles), cellophane prevents the wrapper-to-wrapper flavor migration that produces the unsightly gray "ash" patches sometimes seen on long-stored unwrapped cigars.
The Anti-Cellophane Argument
Cellophane impedes the slow gas exchange that produces aging. Aged cigar tobacco develops its character through controlled exchange of volatile compounds with the surrounding air; cellophane reduces this exchange substantially.
For aging-focused storage (cigars destined to rest 5-10+ years), cellophane removal is the editorial recommendation. The flavor convergence over time produces measurably better aged cigars from unwrapped storage.
The Editorial Position
For ready-to-smoke storage (cigars destined for consumption within 6-12 months): cellophane is fine. The protection benefit outweighs the small aging penalty.
For aging-focused storage (cigars to rest 2+ years for flavor development): remove cellophane and store in a dedicated aging humidor with similar marcas grouped together. The flavor convergence between similar cigars is positive (Cohiba Robustos developing together produce more uniformly excellent aged cigars).
For mixed boxes of similar marcas: remove cellophane within the original box, then store the box in the humidor. The box itself provides physical protection and the cigars age together.