1) Hirelings Expanded removing allowing you to recruit a full roster of hirelings instead of just 3 and having to dismiss them.
2) Dror Ragslin, Neer and Kagha recruitable as companions (Evil Expanded) They need 1 more to replace minsc as well but those seem more viable.
3) Items expanded More net equipment but I would personally like to see more use of the Gith Longsword Design a black version would be cool or a dyeable version. Black/Gold/White and the gemstone color. Net more racial perk gear for all races, boots, necklaces rings and cloaks, Barbarian and monk cloth armor options, More class designed gear in general. Different heavy armor sets like dame aylins and more black guard/drow/gith boot varients.
4) More Feats from various books.
5) Stat rolling, Better hirling changes Sex/Race should be changable. 2 Female Dwarves no Dragonborne, for example being annoying the only way to get a dragonborne character is as a player character.
6) Camp Modifications / Body Sliders for character creation. A Weapon Rack and Armor Vault.
7) Rollable Ablity Score option 4d6 drop the lowest method.
8) More Animal Companions and Wild Shape Options
9) Spell Crafting for Spell Elements.
10) More Controllable Undead Options.
11) Full Vampire vs Vampire ascendant option as well as option to make a character into a werewolf or wear beast expanded on.