Couple of Photo Related Questions

Hey everyone. I've been using Find a Grave as a resource for a long time researching my family's history. I retired last month and as the weather starts to warm up in the Seattle area, I'm enjoying spending time filling in holes and, mainly, adding GPS markers to graves in my area. There are a bunch that are like 90% photographed but around 5% GSP mapped. And as I go up and down the rows, I'm finding quite a few that don't have memorials or photos, etc.

I have a couple of questions... really just looking for opinions from those of you who are more experienced.

1: How do you feel about pictures that have been highly processed vs ones that are more reflective of what the markers actually look like? I've been making judgement calls about whether to just add a GSP tag or add an additional photo to the memorial. I've run across quite a few where the picture is very legible (which is great) but has been processed so much that the marker looks completely different in person. in some cases, the color and everything is totally off. In these cases, I'm leaning toward adding a picture that is more like how the stone looks, even if it's showing some age. Is this cool? No big deal?

2: Speaking of processing photos, how do you all do it? What is your preferred photo editor? I'm finding that some stones are dang hard to read in person, and even worse in the photo. Looking for some suggestions.

Edit: 3: Another questions I've had is, when I add a photo, a GPS Tag or make some other update to the memorial, does that trigger a notification to the memorial owner? I've noticed that the two cemeteries I've been spending time were mostly done by a just few people and I'm adding hundreds of GPS tags and photos and am wondering if this is generating a crazy amount of spam for these folks.