variety of trees

so I'm thinking about swamps. swamp trees are just oak trees, and I don't mind swamps but if you were to make the tree more like a mangrove tree, i feel swamps wouldn't be so in your way. They would be unique. Like the jungle the trees have different sizes, ranging from small to big and anywhere in between, swamp biomes could have this as well. this is only a suggestion, i only want to make different biomes unique.