Oozes are actually more stupid than plants. This makes it hard for anyone to get excited about them. Also, they have no treasure and they have no harvestable parts &/or components. It is also hard for players to feel heroic, powerful or even smart about them: a surfer riding waves has more 'clever' about them than a dude hacking apart Jello® with a knife.
So when you add these to a campaign i recommend you add them sparingly, have them as part of a trap or device, give them a use and make that thing-creature employing these things to be smarter than an animal. That said, you are welcome to make a whole dungeon about Just That Ooze Thang - but you may regret it.
With this in mind, here are the types of ooze that you may find in each of the seven rooms.
Entrance / Stairwell: Typically you want this to drop from above or even slide over and down into a stairwell.
Hallways: The Gelatinous Cube rocks 10' square hallways and is dangerously useless anywhere else. Other oozes can enter and leave through one or more girls
Main Hall: Possibly as food for something acid-immune?
Trades / Construction: Acid based creatures that can't get out of tubs are valuable for alchemy, metallurgy and numerous other applications. Acids and components (cleaning, etching, acid testing & more) can easily come from oozes. The chill-based brown mold can be useful for refrigeration.
Garbage &/or Torture rooms: Yes to both. Breaking garbage down is what oozes do. Also great intimidation tool.
Rest & Restoration rooms: Have you lost your mind? The religious rooms may use these beasts for sacrifices - fully dissolved bodies make resurrection more challenging.
Cultural Places: Possibly for challenges, gauntlets and public displays of cruelty-punishment.
Traps: Even a green slime is lethal in certain conditions.
In & Out-side Clay Golems
Weird Weapons
Cleaners: Gelatinous Cube
Shock Troops
Weird Pet: Black dragons are immune to acid.
Creepy Zoo: Ideally this requires glass, stone & other earthen containers.
Player Rewards: knowledge (useful in-game or fun story), treasure (cash & magic) & feeling good (heroic, smart, powerful &/or sexy).
