REKT

here you have it...
 
Index: clif.c===================================================================--- clif.c (revision 11504)+++ clif.c (working copy)@@ -8325,6 +8332,7 @@ struct map_session_data *ssd = (struct map_session_data *)bl; struct party_data *p = NULL; struct guild *g = NULL;+   char name[NAME_LENGTH]; //Requesting your own "shadow" name. [Skotlex] if (ssd->fd == fd && ssd->disguise)@@ -8336,7 +8344,9 @@   WBUFB(buf,30) = WBUFB(buf,54) = WBUFB(buf,78) = 0;   break; }-   memcpy(WBUFP(buf,6), ssd->status.name, NAME_LENGTH);+   //memcpy(WBUFP(buf,6), ssd->status.name, NAME_LENGTH);+   sprintf(name, "[%d/%d] %s", ssd->status.base_level, ssd->status.job_level,ssd->status.name);+   memcpy(WBUFP(buf,6), name, NAME_LENGTH); if( ssd->status.party_id ) {   p = party_search(ssd->status.party_id);@@ -8450,6 +8460,7 @@  int cmd = 0x195, ps = -1;  struct party_data *p = NULL;  struct guild *g = NULL;+ char name[NAME_LENGTH];  nullpo_retv(ssd);@@ -8459,7 +8470,9 @@  WBUFW(buf,0) = cmd;  WBUFL(buf,2) = ssd->bl.id;- memcpy(WBUFP(buf,6), ssd->status.name, NAME_LENGTH);+ sprintf(name, "[%d/%d] %s", ssd->status.base_level, ssd->status.job_level,ssd->status.name);+ memcpy(WBUFP(buf,6), name, NAME_LENGTH);+ //memcpy(WBUFP(buf,6), ssd->status.name, NAME_LENGTH);  if (!battle_config.display_party_name) { if (ssd->status.party_id > 0 && ssd->status.guild_id > 0 && (g = ssd->guild) != NULL) 

try this
@clif.c
case BL_PC:  { struct map_session_data *ssd = (struct map_session_data *)bl; struct party_data *p = NULL; struct guild *g = NULL;   +char name[NAME_LENGTH]; //Requesting your own "shadow" name. [Skotlex] if (ssd->fd == fd && ssd->disguise)   WBUFL(buf,2) = -bl->id; if( ssd->fakename[0] ) {   WBUFW(buf, 0) = cmd = 0x195;   memcpy(WBUFP(buf,6), ssd->fakename, NAME_LENGTH);   WBUFB(buf,30) = WBUFB(buf,54) = WBUFB(buf,78) = 0;   break; }   +sprintf(name, "[%d/%d] %s", ssd->status.base_level, ssd->status.job_level,ssd->status.name);   +memcpy(WBUFP(buf,6), name, NAME_LENGTH);   -memcpy(WBUFP(buf,6), ssd->status.name, NAME_LENGTH);  

I liked this community!

There we go
https://github.com/HerculesWS/Hercules/commit/57b5943b55e8b8bcede9b4aa944ff855687a366a

it exists in Ragexe clients only. Official implementation is still a WIP, and isn't released yet