The GRAM PRI$M allows you to play Smash and other titles ergonomically with a variety of possible layouts.
The Glyph is a modular all-button controller that is available in layouts for games from Smash to Street Fighter.
AllFightSticks provides DIY cases in different sizes, such as the 15.5" Prototype Steel Aluminum Hybrid case.
The Ipega-9221’s selling point is the fact that the two sides of the fightstick are detachable for those who prefer a southpaw layout etc.
The Furin FRS is the long awaited sequel that boasts modular capabilities and is available in hitbox and mixbox formats.
You can order or 3D print the MojuBox modular controller that can also be engraved with artwork to reflect your interests.