Expertise (That is not, I repeat not a good method of gaining experience as you may notice you will only be gaining 1/8 of this normal OSRS gold experience as you generally do [4 Exp * 1/8 =.5 Exp Per Damage]) The fantastic Sides (Not many but hell who cares?) Drops( The monsters will fall at the exact same rate that they always do, and yes ring of riches will still have an effect on fall rates) Bank (You may build a bank booth at the begginning of the dungeon.) Expertise (If you are patient enough I guess this is okay for expertise, it would drive me insane though.)
Slayer (This will still count as a slayer job, however please note If You Would like to add a slayer monster to the dungeons You Have to have the correct Slayer Level to both add and kill the creature [Ex: 85 slayer to add and kill Abby Demons])
The Agility Clause: The reason why you should have at least 20-70 agility is since you MUST add an agility snare at the begginning of this dungeon, this is because you don't need the critters on your dungeon to escape and destroy your house. Also note you will acquire expertise in agility equal to the level required to jump the trap multiplied by 10, but it will only provide expertise once per 5 minutes.
The Summoning Clause: The 50 Summoning is just required to bring a unique part of the dungeon. This cooridor is the only person you'll be able to possess Summoning Familiars (Note: No pets are allowed even in this cooridor) but you must have Rs 2007 gold at least 50 Summoning, and you need 5 Levels more than the necessary Level (Unless you are at Level-99) to summon the familiar.