You got some good ideas, I also think the water swimming one should be updated, Like it does just look weird I can't lie when you literally lose all your body but your head unless you grow some 20 ft feet and can walk across the bottom I don't think it's possible before just the head to be shown.
Also, Winter... I'm kinda torn between opinions on that, I kinda like how Winter looks already I also kinda low-key love the kinda silly things in the snow winter time, Like one being that silly noob who was frozen alive in the small swamptown water area by the shops, Silly and cute which I like. But same time ugh, I do agree though it could be better, For instance maybe have snowmen , Have some snow piles (Which I recall don't exist unless you count when you use a shovel) and maybe add some frozen plants, ect, I think that will make it look neater, Not needed but it would make it kinda more immersive in my opinion
Now with the most recentish update with the game, There are new house looks if that is hat you mean, I love they are making new house looks and possibly will make it possible where buying a house look can be something purchasable in future new Revolution/Nexus events!
Also I agree, Graal kinda does lack animation effects of player actions, there is he dance effect but that is it literally that is it I think for players to get free, You can purchase the ability to hug after you obtain a frog morph for 1000, and obtain a ability to cry for 8000 ( Because in order to cry away your problems you got to pay for that too)