Let me discuss this from what already is there at the gyms for them,
Kiki might because the courtyard there looks really zen or spirituel and could give pokes a better crit rate and higher dmg output, or not because she dies
Aya don't think so because although she is the replacement it was rather sudden and gym leader make their fields to their preferences ( I Think), others might be the same as correy's
Serra don't think so because you battle her in the Living room I think and her setup is already pretty good, but she still could walk away to a room in the back with a ice field
Noel don't think so because he isn't in a gym, just out in the open, although laura's flowers patterns could be benificial in some way like regen or chances of sleep.poisen,paralyse powder