Really?My point, overall, is that combat is inherently inferior to shooting in 5th . . . .
Several of the newset codices have drastic leanings towards cc lists, and these are all the books that were heavily touted as being overpowered.
Also, comparing phases directly, without taking into account army types is a little misleading. Tau, for example, will always have a stronger shooting phase than cc, whereas, Nids would tend towards the opposite end of the scale.
This would lead me to believe that if, as you say, these rumoured rules would break cc even more, then I postulate that some armies abilities would improve, whilst some would degrade - but only within that one phase. What about the rest of the turn?
Balance is key here, something GW often struggle with, true, but the "wait and see" argument seems wisest with rumours of this calibre (no offense intended Zion).