I am aware that most of these suggestions may have been talked about but:
First off, maybe we should have this thing in our friend list that shows when our friend was last online. Like if a friend of mine: ISeeYou was on yesterday at 10pm my time: ISeeYou-Last Online, Feb. 11 14:10:00pm
Next, more Emotions and actions. Like in IT servers. I know it was planned, but I still think it should be.
Better models and animations. In my opinion, some animations I see could be better. Like the running or walking, or dancing animations. The models of the canine seems a little rushed, as the feline's got maybe a more detailed atonomy.
Mass Markings implemented into FH. Most players can't get MM, so it's an issue with players who do have it and who don't. Maybe they should be implemented for everyone.
New maps. Sure, exploring is fun, but once you've crushed every blade of grass with your paw, it's done. Been there done that.
I know this is impossible without the source code, but maybe if the staff get it one day, or Kovu comes back? Leave feedback below? x3
Lately, Kovu has appeared back on the scene. Though, he is currently working on another game. This means he has put Feral Heart in the back seat for a while and he may, or may not return to it himself, or give the source codes to one of the Staff members, possibly Red for example.
As for more maps, there are hundreds of maps, and many map packs to which you can allow your character to explore in.
The mass markings are a good idea to have them involved i the FH download, it that means that as soon as someone makes more, then all those people whom aren't able to download the files properly, and unable to get it working, then has another issue.
I must admit, i do like the grass idea, it's be a lovely change to see that much detail go into the maps, but it'll be unlikely to have for quiet some time.
-Kroven