Let me explore the feasibility and maintainability of this technology stack: LuaJIT + FFI + SDL3 + OpenGL for cross-platform development.

## Feasibility Analysis

**Technical Viability: Excellent**
This combination is highly feasible because:
- LuaJIT's FFI provides zero-overhead C library bindings, making it ideal for calling SDL3 and OpenGL functions directly
- SDL3 handles platform abstraction for windowing, input, audio, and provides an OpenGL context
- OpenGL offers mature, cross-platform graphics capabilities
- All components have proven track records in production environments

**Performance Characteristics:**
- LuaJIT compiles to native machine code, delivering near-C performance for computational tasks
- FFI calls have minimal overhead compared to traditional binding approaches
- Direct OpenGL calls through FFI bypass intermediate layers
- SDL3's hardware acceleration support ensures optimal graphics performance

**Platform Coverage:**
- SDL3 supports Windows, macOS, Linux, iOS, Android, and various embedded platforms
- LuaJIT runs on x86, x64, ARM, and other architectures
- OpenGL is available virtually everywhere, with fallback options (OpenGL ES, WebGL)

## Maintainability Assessment

**Advantages:**
- **Simplicity**: Lua's clean syntax reduces complexity compared to C/C++
- **Rapid Iteration**: Lua's dynamic nature allows quick prototyping and testing
- **Direct API Access**: FFI eliminates the need for custom binding maintenance
- **Small Codebase**: Lua applications tend to be more concise than equivalent C/C++ code

**Potential Challenges:**
- **FFI Declarations**: Maintaining C structure definitions and function signatures requires careful attention to API changes
- **Memory Management**: Manual memory handling through FFI requires discipline
- **Debugging**: Mixed Lua/C debugging can be more complex than pure language debugging
- **Type Safety**: FFI bypasses Lua's type system, requiring careful validation

## Development Workflow Considerations

**Build System:**
- Relatively simple: LuaJIT + shared libraries (SDL3, OpenGL drivers)
- Cross-compilation supported through LuaJIT's build system
- Dependency management is straightforward with system package managers

**Distribution:**
- Self-contained executables possible by embedding LuaJIT
- SDL3 can be statically linked or distributed as shared libraries
- OpenGL drivers are typically system-provided

## Practical Recommendations

**Best Practices:**
1. **Create abstraction layers** over raw FFI calls for commonly used functionality
2. **Implement error handling** for all FFI operations, especially OpenGL calls
3. **Use metatables** to create object-oriented wrappers around C structures
4. **Establish clear memory management patterns** for FFI-allocated resources

**Risk Mitigation:**
- Test thoroughly across target platforms early in development
- Create automated testing for FFI bindings to catch API changes
- Consider using existing Lua-SDL3 bindings where available to reduce maintenance burden

**When This Stack Makes Sense:**
- Games and interactive applications requiring high performance
- Prototyping graphics applications before committing to C/C++
- Projects where rapid development cycles are prioritized
- Applications requiring extensive scripting capabilities

This technology combination offers an excellent balance of performance, flexibility, and development speed, making it particularly suitable for graphics-intensive applications where traditional scripting languages might be too slow, but full C/C++ development would be overkill.

The main consideration is ensuring your team has sufficient expertise in both Lua FFI patterns and OpenGL/SDL3 concepts, as the combination requires understanding low-level graphics programming concepts while working in a high-level language environment.