i think weather should be a neat feature,. A day and night filter! Where graal can get dark and night out every 2 hours and will allow things like bugs such as lightning bugs or fireflies do be more active and catchable.
Maybe rain and sun rays in certain area? Maybe shadows under the trees? It would make graal look absolutely amazing.and would allow a more in-depth experience in graal. This may take a lot of work but it would be worth it.
Second, Add a better status editing feature, Where it allows players to more easily make a status black edit fonts, ect. Since it confuses new players.
Also, Some minor things such as removing loot limit Because it seems really pointless to limit Something like that when they can just go and get another 200, all that kinda does is just waste time selling gralats and going back. Also bringing back explosive arrows Because they was very much so needed in the farming community, especially for newer players, Plus it was kinda fun to have anyway, I get it was removed because PKers, But you could've just made kills with Explosive arrows not count or simply put does not hurt people in open world.
Also maybe add a system where you can change graal Music? I personally LOVE the PC music theme in Graal Classic, It sounds so much different, Which it was on apps.
Only other small feature that could be added is perhaps a system that allows you to not receive PMs from not friends but can accept guild house invs?