Sims 4 Recommend Suggestions

Suhngie​ you can join the military with the Strangerville pack. Here's a career overview:

https://help.ea.com/en/articles/the-sims/the-sims-4/military-career/

Sail boats are part of the Royalty and Legacy pack, Adventure Awaits has canoeing and Island Living has Outrigger Canoes for sailing. But I agree I'd like a better way to build houseboats so we could have something like the yacht in Sims 2. At the moment I make houseboats on water lots with the pond/water tool or with water lots in Sulani from the Island Living pack. I'd like to have liveable canal boats or yachts.

Indoor plants are part of Enchanted by Nature...I keep forgetting to water mine! They're constantly dying 😞.

If you go into Outdoor Water Decor>Pond Effects you can add an Alligator to any pond you are building. You also see them (or are they crocodiles I can never tell the difference) in the wild in Jungle Adventure but you can't interact with them, they just look a bit menacing while your Sim is fishing.

There are sharks and turtles with Island Living and you can add turtles to a pond by adding the bog log for them from Pond Effects. But even though there is a shark attack death you don't get to see the sharks, you just get Jaws like music to signal impending doom, it's not quite the same as seeing them.

I'd love to bring lizards back like with Sims 3. The closest we've got I suppose are the Axolotls in Lovestruck. But I do miss the lizards.

Cars are a much missed and requested feature. At the moment I add decorative cars (and decorative boats) using the debug cheat bb.showhiddenobjects and bb.showliveeditobjects. Can't travel in them unfortunately but they do look cool on the driveway.