Obviously, the title is a ruse to get as much replies as possible. I made this disclaimer so that no one thinks I'm practising marketing skills.
Add Support for hardware large integer arithmetic in CLR and broaden support for large numbers in BCL
If x > y enable all breakpoints(or those with label containing 'abc'), otherwise disable while this condition is enabled
Shortcut from debugged variable to memory view (extendable byte array visualization)
Language agnostic comment notation for mathematical expressions with IDE visualization
Optimize file system operations
While at this non-marketing/promotion/plugging agenda, I'll also remind everyone of the magical ideas I posted earlier, however these ideas are still at the "planting the seeds" stage:
1. User can create a C++ native project and add C# classes directly in the same project next to C++ classes. The C++ code can be compiled with 3rd party compiler like Intel compiler and magic happens which allows the C# classes to talk with the C++ classes (and invoke C functions) and the other way around as if they were the same language, no performance penalties at all.
2. The C# classes code in the C++ project can be modified while the entire application is running in optimized release build. This happens by attaching to the running project, suspending it for a millisecond when it hits a pre-determined "safe to hotpatch section" and updating the C# code inside.
3. Changes to C# portions do not cause the C++ code to re-compile or link.
4. As alternative to embedding C# the embedding interface supports embedding other future languages which gain the same features as above.