Hi! This game is awesome! I played it on hard mode and really enjoyed it. There were only a few minor bugs but I was able to fix most of them myself.
To make Mew obey: Download a hex editor (I prefer
Translhextion for basic tasks), press Ctrl + G, then type "x1d402" (without the quotation marks) into the box that pops up. Somewhere on the first line should be the number '97' (it should be the third number from the left). Change that to '00' by pressing the zero key twice. Save and it works.
To get HM07 waterfall in Ecruteak: add compare LASTRESULT 0x1 (like the HM06 Rock Smash script in Cianwood).
To let Moltres also disappear when its catched (it only disappears after defeating): add the two map scripts and change the PeopleID to 0052 (like it was on mt.ember).
To get Entei and Raikou: change the PeopleIDs in route 34, route 4 and route 42 so they wont be duplicated anymore. I changed the IDs of the three girls in route 34, empty eventnumber 5 in route 4 and the rock smashes in route 42 so you wont need to change the scripts.
I wasnt able to add the flightspots in Johto. When I deleted for example NewBark and added Cherrygrove in world map editor it worked but when I only add one flightspot the game turns black and freezes when using Fly. I think thats because the first map of the Sevii Islands only had 4 flightspots and I dont know how to change that. I hope there is someone who knows how to expand this.
Do you know where to get the GS ball for Celebi?
I also thought that this game would be even more awesome when TM31 is Brick Break (instead of U-turn) and have Blastoise as water/steel, Meganium as grass/fairy, Typhlosion as fire/ground, Feraligatr as water/dark, Ampharos as electric/dragon and Gyarados as water/dragon types so I changed it (using HexManiacAdvance) and added shiny spots like Ultra Violet but thats my opinion.