I found some good linkers that might be worth a shot.

The Byte Optimized Linker - a x86_64 ELF linker (has some limitations compared to other linkers)
The Rape 'n Load Linker (yes i know the name is fucking stupid) - a x86 ELF linker

Some limitations to 'rld':

• Command line is limited to 255 arguments.
  
• Each command line argument is limited to 255 characters.
  
• Input/Output elf cannot exceed 2GiB.
  
• Currently supporting only x86 architecture.
  

I know that having separate linkers for separate architecture is annoying, but finding an alternative linker is not easy.