I haven't been playing Trove for that long yet so these are just some little things I thought could be swell. I guess. And please do correct me if some of these things already exist and I just haven't noticed.
As far as I know the boats in Trove are always in either one of these two categories: Clippers and gallions. So to put it simply, it would be really sweet to be able to have 2 or 3 people in a gallion. Would problably be really buggy at first though. Also more boats and more to do with boats. And things. From my personal experience I can say, it is kinda disappointing to grind for days to get SS BlockSides only to find out all you can do is sail around. So basically give more meaning to boats like maybe challenges or races or something. Maybe naval wars? Eh?
On the lvl10 and lvl20 pirate captain's costumes change the color of the parrot? Or add something to the turret and/or cannon? The color-changing jacket just seems kinda meh. Can't really talk about any other classes' costumes as I haven't unlocked many classes yet.
A /pc command would be nice. Since many people are in the dark about alot of the values of trove items, it would be handy if you could price check with a single command. That or somekind of "helpers" in the chat. As in people apply for helper roles on the forums, they do their best to help people out in the chat and everyone lives happily ever after.
The options to disable invites and whispers could prove really useful to alot of people.
These ideas are really rough and would prolly be alot of work.