Here's my attempt to make the game small party compatible, I edited the xp tables, so a solo character will have to get an amount of xp equaling to fighter_xp*6 and a character in a two person party to fighter_xp*3. I edited only the xp needed to level after level 8 to avoid problems on character creation or on importing from bg1.
the zip file includes 4 files: XPLEVEL.2DA.1 ; XPLEVEL.2DA.2 XPLEVEL.2DA.BAK ; XPCAP.2DA. -The first two files are the xp tables for 2 and 1 person parties, remove the .1 OR .2 from the filename and place it into your override folder. The third file is a backup of the original xp table, in case forgot to backup your file. The last file is a part of the xp cap remover which must be installed in order to make the xp tables work correctly.
Also, I'd really appreciate your help in answering some simple questions: 1. the amount of total xp in the end of soa/tob(?) ; 2. the number of party members at that point and the level of every party member (?); -I need this info for correcting the xp tables in case it would be needed and building the tables for 3,4,5-person parties. - thanx in advance;