Here is mine, it does not mess with farming, forestry or park trees.
It replaces some basic oak trees with cherry blossoms (because most houses, offices, shops and some unique buildings like the graveyard or service buildings use the three first tree models (tree2, tree2variant and tree3variant) in them, so replacing a few of those three will give a nice mix of your chosen replaced tree scattered naturally among the lots), and replaces the road trees with palms. I find it makes the city look quite accurate to either Hong Kong, Tokyo or Seoul / Shanghai.

You can change these lines like this, to replace some oak trees with palms instead of cherry blossoms.
<Tree original="Tree2" replacement="palm01" />
<Tree original="Tree2variant" replacement="palm01" />

Here's the whole config.

<Environments>
<Environment name="Tropical">
<replaceRoadTrees>true</replaceRoadTrees>
<replaceResidentialTrees>true</replaceResidentialTrees>
<replaceCommercialTrees>true</replaceCommercialTrees>
<replaceIndustrialFarmingTrees>false</replaceIndustrialFarmingTrees>
<replaceIndustrialForestryTrees>false</replaceIndustrialForestryTrees>
<replaceParkTrees>false</replaceParkTrees>
<replaceOtherBuildingTrees>true</replaceOtherBuildingTrees>
<removeUglyDirtUnderTrees>true</removeUglyDirtUnderTrees>
<tree_2lane>palm01</tree_2lane>
<tree_4lane>palm01</tree_4lane>
<tree_6lane>palm01</tree_6lane>
<Trees>
<Tree original="Tree2" replacement="CherryTree01" />
<Tree original="Tree2variant" replacement="CherryTree01" />
<Tree original="Tree3variant" replacement="Tree3variant" />
<Tree original="Alder01" replacement="Alder01" />
<Tree original="Beech01low" replacement="Beech01low" />
<Tree original="Bush01" replacement="Bush01" />
<Tree original="Bush02" replacement="Bush02" />
<Tree original="palm01" replacement="palm01" />
<Tree original="palmplant01" replacement="palmplant01" />
<Tree original="CherryTree01" replacement="CherryTree01" />
<Tree original="419338792.Robusta Palm Tall_Data" replacement="419338792.Robusta Palm Tall_Data" />
<Tree original="419339088.Robusta Palm Short_Data" replacement="419339088.Robusta Palm Short_Data" />
<Tree original="419165912.Washingtonia Robusta Palm Short_Data" replacement="419165912.Washingtonia Robusta Palm Short_Data" />
<Tree original="418877663.Washingtonia Robusta Palm Tall_Data" replacement="418877663.Washingtonia Robusta Palm Tall_Data" />
</Trees>
</Environment>
</Environments>

Just a question: how do you know what the trees are called? I mean: how do you know the "Cherry tree" is "CherryTree01"? Is there a list? (I haven't played with the mod yet, have to wait until tomorrow...). Thanks! :)