It would also severly ruin the novelty of running into a pokemon with a 1/8192 chance of being shiny.
The 50/50 thing wouldn't be as fun. As much as I love shinies, I like the fact luck plays a really big factor...even though my luck isn't that great lol.
I would hate for HG/SS to be exactly like the old games. As much as I love them, some of the systems were...broken. I doubt that it will the identical, but still I worry.
I also don't want to see 'high level areas' only being about level 40, and I don't want only one area where I can train my soon-to-be-lvl100's. I'm sure a lot of you know the feeling.
I don't want to see the same awfull script of the older games. DPPt's script still isn't mind boggaling, but at least I can stay awake...mostly.
And maybe the most important thing to me, I don't want them to get rid of the apricorns things, to make the costom pokeballs. I know, I know, it doesn't make any sense and it doesn't matter because they basically have new names and are in DPPt, but I liked the way they looked. I'm a detail freak, and I don't use pokeballs that I don't like. You have to see them EVERY TIME you send that pokemon out, so I want it to look good. Yeah, OCD, sorry.