I can't understand how it is (the mages and especially the grass) way noisier and dirtier than the other pixelart shown on that page...  I like the female character face the most.
The grass on other pictures is way way better... Why are you shoing the worst part if clearly there's assets more technically correct there?
:P

I wouldn't want to sound unwelcoming, definitely not my tone. I just think that 'give ideas' is too generic for the topic here.

If you require some technical help on pixelart is one thing, we should help each other to get better, but calling for ideas is another question: many people here are struggling with their own creative decissions for their projects, so, that generic call for 'ideas' so generic I think is out of reach of the topic of the forum.
You ask people to familiarize with your project, and then think and give you their own ideas... a very costy help in terms of time and effort. Also, there's a forum section for hiring pixel artists here.

Best luck with the project!
Said so, I hope someone here or elsewere can help you with some ideas.
Count me to help with any definite question at my reach that I read here. And beyond, there's wiser pixelartists.

It's not about the color count. It just lacks any structure if you look at the grass. You can create perfectly fine grass with only two colors if you know what you are doing.
As it is now, it just looks like random noise. I would suggest to either try to shape out the grass properly or make it single color if you are aiming for a more comic like look.

Looking at the characters, there is also too much noise. The contrast and choice of colors are also quite aggressive. Going for clearer, more minimalistic shapes and less saturated colors might be a way to go about it.

Thanks for feedback!
The image I posted in topic is an experimental play with reducing colors.
I see here are people who are ready to help and give feedback, thanks!
I will create new topics with artwork from game and will post less experimental works.