Some updates on where I'm at:
1) Currently revamping the wild encounters. The method used in RC 1 was very inefficient and unreliable/buggy. In RC 2, there will now be morning, daytime, evening, (and some late evenings), and nighttime wild grass encounters everywhere. The PlayGuide will be updated accordingly with this new information.
2) HM 06 Flight is now bug free. HM 06 is obtainable after beating Chert's Town Gym Leader Duo of Brock and Chert. HM 07 (Waterfall) has now been renamed to Cascade. And HM 08 (Dive) have been changed to Upheaval which is Regigigas' signature move that ONLY he can learn. There will be certain parts of the game where ONLY Regigigas can unlock.
3) Also be ready to catch some legendaries in RC 2. For example, using the Gale Wings event key item, you'll be given special access to fly to Blue Green Island where you'll have to find Latios (Blue) and Latias (Green, yes, green palette) roaming around on the island. The Three Regi Arc will also begin! It will be quite challenging to awaken them as they are a part of the storyline.
4) Lastly, there will be some main story inverse battles...!