when people ***** about pokemon, it is second in annoyance only to those banners that tell you you won something...

the REAL reason there's been no GSC conectivity is that when they made RS, they changed the mathematical calculations and formulas that tell the computer the "who what and where" of the game... these new formulas are incompatable with the old ones in every way... the computers of both types cant talk to one another, ASIDE from GBA's in "GBA mode" and "GB mode" not being able to communicate.

in Collusium, if the DID allow simultaneous interactivity of GSC/RBY and RS, they would have to re-calculate nearly everything that was done (ie. damage), and the cpu would be making "assumptions" about wether or not the GSC pokemon have a "20" or "21" IV, etc...

see?