First off Great Game! Congrats on the success it's well deserved and the hard work is much appreciated.
Second: Mounts follow a little too close always getting in the way when harvesting materials. I know there's a stay prompt but having to turn around and initiate it every time is a pain when you need a butt load of the same material. You could just give the ants the same tier chopping power as your current Omni tool so you never have to get off the buggy when gathering stems.
Now for my Suggestions: #1 & #2 would work together.
#1. Adding flying mounts like Butterflies, Bees or Dragonflies.
#2. Adding a Bird Boss or a couple of them not something you'd kill of course just something that leaves its nest after you beat it the first time hell you could also use said bird or birds to keep flying mounts out of certain areas saying it's too dangerous for buggy having them either knock you off the mount or straight up try to eat and kill you if you don't change your course. idk just a thought but if not how about a butterfly wing suit, parasail or hangglider just something that travels faster and further than the dandelion tuft.
#3. Adding a base repellent that only repels common enemies not O.R.C waves.
#4. Adding the ability to Tame certain insects to go gather materials, guard your base, help with certain task when they're with you or to increase stats like carrying weight, run speed or inventory space while equipped/following, you could add 2 blueprints a Bug Pin or Nest for your insects on standby and a Burg.L Insect Management Station allowing you to give different orders and tasks to your insects like guard the base or harvest certain materials you've already found. Just give them an allotted time to finish said tasks and a certain amount they can obtain from said task.