NO!
There are several reasons why not.
A. We made Fire Red/Leaf Green and there is Red/Blue, we don't necessarily need to trade with these games. And there are now ways to get the Johto Pokemon. (Colosseum, Sevii Islands, Emerald extras, Altering cave...)
B. We abandoned the Hexidecimal system when we had more that 256 Pokemon. That was an extremely good thing. I don't want to fiddle with it now.
C. Missingno. and 'M can now go and gunk up our new games. Face it, they can't adjust to the games, and they would overwhelm it.
D. What about natures? Are we going to let it be random? I trade over my Alakazam, hey, it's Adamant. Doh!
E. Since we can clone all of these Pokemon, people can clone and make these riduculous teams, like six Lugias, and they can make infinite Master Balls.
F. I don't care for the old Johto games, but that is more of an opinion.
Although...
Mr_Confused said:
i do because i want my level 100 shiny politoed and level 100 shiny charizard.
I feel your pain...