What I see is:

Eloquence is the most direct replacement for TurboImage outside of MPE.
If you've got COBOL programs with VPlus, conversion can be a trivial
effort (given tools that are available). JCL can be replaced with
native scripting on any system. 

This combination provides the easiest porting, and an environment most 
similar to the original. It's more comfortable.

Dave

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