I will be working on the new elite four, once the gyms are done. Might not bother much with the texting of the gyms yet, just the basic consept of changing the Pokemon and the in battle sprite of the gym leaders. Information is below:
First Gym - Electric
Secound Gym - Ghost
Third Gym - Flying
Fourth Gym - Random Types
Fifth Gym - Steel/Rock
Sifth Gym - Water/Fighting Gym
Seventh Gym - Still Deciding
Eigth Gym - TEAM ROCKET's Gym, You'll see there Pokemon when you get there.
The 1st, 2nd, 3rd, 4th, 8th gym has been completed. I just need to work on the gyms, more information and hopefully screenshots soon guys =)