You could probably put a very thin wood lam over it. Will just look like an accent. I've seen some bows with them. Riser wood scrap made as thin as you can would be good combo.
You could also try wicking superglue in it first, you have to work fast, wick the glue, plastic wrap and clamp the best you can. It may still show, I've had so so results this way, clear glass seems to always show the repair.
I put a bubinga strip on the belly of a D/R to try to stiffen the tips. It was 10" in from nock. didn't stiffen it much at all but don't look bad.
Think it was about .025" thick.
I always file toward bow back so if you have a lift, the tip overlay will cover it. A sharp file helps too.