It's not, but on romhack.me you can post info and pics about the hacks. I'm getting good reviews though. I have a bunch of features:
Day/night
Day/night wild Pokemon switch
Day/night music switch
Class based trainer music (example, rival has their own music instead of measly trainer battle)
Level switching (battle frontier)
this pokedex:
http://pokemondb.net/pokedex/game/platinum
Sinnoh region (never been done in a GBA hack)
extra incense items for breeding new pokemon
extra evolution stones (dawn, dusk, shiny)
physical special split
magma armor/flame body implementation
all moves up to DPPt
extra encounter music (not just 3)
player actually faces trainers when interacted
JPAN's hacked engine
DP overworlds (aka NPCs)
BW2 Repel system