Welcome to Pokéwanderer, a hack I've worked on for a little over a year in off-and-on phases. It's still in the very early stages, but the goal 
is to completely change up gameplay by using the games Pokémon Super Mystery Dungeon and Mystery Dungeon: Shiren the Wanderer as 
inspiration for the game design aspects. Due to the absurd scope of the project, many non-story and Post-Game Story Dungeons will 
be cut to avoid content bloat and so I can focus more closely on the remaining content. 
I don't think anyone's gonna miss Tiny Meadow or Aegis Cave anyways :/
(Side note to anyone who saw the playtest patches: 0.5.4 was used was originally 1.5.4, but the 0.X naming makes more sense with where I am in developement)

This patch works on Explorers of Sky US roms(not the Xenophobia version)

Notable changes: 
Starters see pretty significant changes; 
Fairy Type(And Fairy Gummi) is added;
IQ learnsets are modified mainly for QoL and balancing purposes; 
Many status-inflicting seeds now stack;
Orbs never miss and some orb effects are modified;
Damaging attacks with "room" range only exist on bosses, most room-wide attacks are now "8-tiles around the user";
All enemies take on narrow, specific roles in Dungeons(often only having 2-3 moves and in some cases less);
Enemy learnsets, types, abilities, IQ skills, and even in some cases names and movement speed, are all modified; 
Enemies have higher EXP yields and take on average 2-4 hits to be defeated;
Spawnrates are lowered from every 36 turns to every 40 turns;
Enemies cannot catch or use items without a specific IQ group, and most moves have default crit rates of 0(not the same as moves 
being incapable of critically hitting, it's just less likely);
Traditional recruitment is impossible, though there are plans to make sidequests for the recruitment of certain Pokemon(late into developement).

Changes from 0.5.4:
-Various starter rebalances
-Craggy Coast and Side Path are now finished(yay!)
-Blast Seeds now deal 100 damage when eaten or 75 damage when thrown(100/75). These values will be lowered to 25/12 boss fights.
-Regen rates slightly decreased
-Orbs no longer affected by taunt

For my full update notes, please DM me if interested.

Note: Nothing is currently finished past Craggy Coast, and the only person who's consistently playtested anything in this hack is myself.
I feel like what I have so far is fairly balanced, though some starters might be a little too strong or weak as is. The Dungeons from 
Beach Cave to Upper Steam Cave are meant to serve as an extended tutorial of sorts, so the game still starts off fairly easy but ramps up rather quickly. 
If you have feedback, either on starter balancing or Dungeon balancing, please contact me. All feedback is greatly appreciated; it's necessary that I 
receive many perspectives in order to better design this hack. Thanks!

Credits
ASM help:
Sudzoof
End
Adex

Playtesting:
Cupshadow
Stolen Burrito
Cait Sith