I can help with 3D monster design and animation, and I can also create icons using Photoshop, Paint, and Unreal.
Added 7 minutes later
I didn't come up with a very good idea for the swamp; if you look closely, there are many mountains there. It would be better if you came up with something where a portal opened somewhere and an island was transported there. And the plot for the game's Campaign: an island in another dimension is starting to dry up, and mages are taking over the land. You need to defeat the mages, obtain 8 artifacts from various islands, and use these artifacts to open a dimension back to the original, in order to survive.
Added 5 minutes later
It would be better to use a brown color, as it is associated with something disgusting, slimy, and dirty.
Added 2 minutes later
I'm on a roll! Have you noticed that the map looks like Europe and Africa, but Russia is empty there? We could set it in Russia.
Added 28 minutes later
I created a hero concept in 5 minutes, but instead of a horse, you could use a lynx, and instead of a troll, you could use a lizard.
Асха - Порядок! Ургаш - Хаос! Силат - Воздух!
Шаласса - Вода! Аркат - Пламя! Силанна - Земля!
Сар-Илам - Дракон-Маг! Эльрат - Свет! Маласса - Тьма!