I‘m not a fan of the 80‘s stucco look and love more of the farmhouse look. What could I change? Limited space for shutters but maybe? Front porch?

Quoines (sp?) are kind of 80's. Can you get rid of them? If not, what about painting them out. Otherwise I wouldn't change anything on the house The arched windows are a little dated but I wouldn't overhaul to change them. The landscaping is the only thing that needs attention. Shrubs can date a house when they get out of shape or overgrown. A sloping yard can be cool but don't ask me how to landscape it. But I have seen photos here with sloping yards that are very pretty.

I think it is two far a leap to move this house to a farmhouse look. The corner edge treatment is dominating everything - adding shutters will just add more visual clutter.I don't think they can removed without damaging the structure so the only option is to paint them the same color as the body of the house. I think keeping the house the light gray is fine, if you like it,as it coordinates well with the roof color.

The storm door needs to go as it detracts. Consider painting the front door black.

I agree with mamadada's comments about the landscaping. That slope is so extreme it is scary and the plantings near the house just accentuates the extreme undesirable slope.

If you have the budget, hire a landscape architect. Your house is "important" and deserves the correct landscaping to enhance it. Terracing might be the answer.

Best.

I think a charcoal grey trim including the quoins could update the look or match the quoins to the exterior color and then the darker grey for the rest of the trim.

Rawket Grl and others are right about the landscaping and painting suggestions. I would add some trees to the sloping portion of the yard to help stablize it. I would not put a lawn there. Depending on where the house is located you might be able to do something like this:

Painting the entire house a lighter grey would soften it.