There could be some NPC's with psychic pokemon who could say more than just "PikaPika" or "Guguguwaawa", maybe even having some thoughts about the player, such as first impressions, or, if the pokemon was involved in a quest involving the pokemon and it's trainer where the player helps them, it could give the player a thank-you, and, possibly after the first time spoken to, the pokemon could give the player a gift not part of the quest reward as a sign of gratitude. If it were team pokemon, unless there was some area where Pokemon are able to be outside their pokeball, I haven't heard of any way the player could interact with the pokemon party.

Will I Have to make a new character, Or will my old Character still be there?

Also, Will the pokemon follow you around still, like they did in the pre-beta?

With the removal of SR, Charizard will have a much easier time switching in, instead of losing 1/2 it's HP every time it switches in.

They have already said Stealth rock will not be in PU, but I'm not sure if Spikes and Toxic spikes will be in or not.

Yes, If each evoultion line got it's own coloring, in the monster egg group, there are 68 different pokemon and 28 different evolutionary lines. if there are 28 different colorings for 68 individual pokemon, thats a total of 1904 different colorings. and, that's less than one tenth of all the pokemon in total. So, doesn't ever seem likely to be done, at least not any time soon.

Yeah, but he has an awesome Typing to make up for his Not as good advantage over Torterra.

Know what Starters I'd Like to see in Gen 6?
I think the types of the starters in their 2nd Evoulutions should be Grass/Dark, Fire/Psychic, and Water/Fighting, similar how the Gen 4 Starters Gained an advantage over the type they were weak to in their final evolution.