[plt-scheme] Will the stepper support more language levels?

These days I am program in DrScheme and find that debugging is not so easy. 

The "Check Syntax" didn't do many. The "coming soon" MrFlow is still a static 
debugger which I don't think can always understand the algorithm in the program 
to be debugged. 

Obviously stepper can help debugging greatly, but many programms are not in 
Beginers. Although higher levels are not algebraic, but other non-algebraic 
languages such as C or even the MIT scheme support things like stepper. 

So will future DrScheme stepper support more language levels? Or the stepper 
of a non-algebraic language just contravene PLT's philosophy?