"maybe replacing" is correct and can be used in written English.
It is used when describing a possibility of replacing something. Example: Maybe replacing the old couch with a new one will make the living room feel more spacious.
Instead of simply accepting the fact that the kitchen counter is too low, they think about raising it a few inches, and maybe replacing it with granite while they're at it.
"People have showed the board plans for a small-scale renovation -- maybe replacing some kitchen cabinets -- and the board passed it through," said Stuart Saft, a real estate lawyer who is chairman of the Council of New York Cooperatives and Condominiums.
Maybe replacing the swipe-to-pay experience with a tap-to-pay experience isn't the answer, after all.
Some elements of our day-to-day lifestyles should probably be revamped, with high-speed rail maybe replacing cars, renewables and nuclear power displacing fossil fuels.
People want to pull the rope on their chainsaw and go to work, but, actually, raking pine needles and knocking down the weeds and moving the wood pile and taking a look at where your propane tank is and maybe replacing those wood shingles with rock or slate shingles or asphalt shingles, was a smarter thing to do.
Maybe replace that light switch.
Maybe replace the building outside my window with a seascape?
During those jobs, Mr. Esparza would sometimes offer to touch up the church's crucifix or maybe replace the gold leaf that had worn off Mary's halo.
The normal high T2 signal of CSF maybe replaced by low signal from malignant lesions.
Clearly, we should either shut down the G8 or maybe replace it maybe with the G4 of the United States, the European Union, India, China and maybe one or two others.
Pre-therapy dose planning, as done in clinical studies, could maybe replace the maximum tolerated dose or the maximum tolerated activity studies in pre-clinical therapy studies.
