ACTUALLY I CAME UP WITH A GOOD IDEA!
Instead of Safari Zone having 1 mode with the 500 step and Safari balls thing, It can have 1 more; Pokeradar mode.
I HOPE YOU PROGRAMMERS ARE READING THIS!
Basically, You have your own pokeballs, But the safari wardens confiscate your master balls.
You chain a pokemon; e.g. Toxicroak.
You keep chaining, and if it breaks, your game is OVER and you must pay an extra 50,000 money if you wish to try a new chain, but the 1st pokemon you encounter is the same as the previous chain. So that means, there is 100% chance I will get a toxicroak on my first link, then the other random pokemon come in.
If you get a shiny (1st time) you get a bronze medal for your trainer card. 50th: Silver, 100th: Gold, 1000th: Platinum.
But of course, this is ONLY unlockable after the credits roll.
Yay me ^_^