As somebody who will probably move on in some capacity to Champions Online if CoH gets buried for good, presuming that Plan Z doesn't spring up very fast and very well, it'd be nice to see Champions getting some more serious and less cartoony story lines going and it'd be nice to see STO and Champions getting developers who might actually do something with Champions.
I always felt Champions had a stronger ground floor base than City of Heroes (more colors to costume parts, customized glow, asymmetrical costumes, free form power selection, faster and more dynamic combat, better handling of travel powers), but then built everything off that weaker than anything City of Heroes ever could (weaker story than CoH, worse graphics, far less actual powers even if CO's selection is more free form, less costume and color options overall, less power customization options overall than CoH, less facial structure and skeletal options than CoH, waaaaay less content than CoH, etc.). CoH Developers could do a lot of good there, if given even a fraction of the budget they had over in CoH.
All that qualifying stuff said, I wouldn't want them to move over to CO until CoH is actively dead, if they can help it, and in either case I'm extremely doubting the viability that Cryptic will do this anyways, because the whole point of this mess is trying to wrestle the CoH IP out of NCSoft's clammy hands. CoH already has rights to the CoH engine. It's not the technology they need, it's the actual rights to Statesman, Positron, Paragon City, Arachnos, etc.
Cryptic couldn't do anything with that IP for the SAME REASONS we can't.