Hold your horses before going and spending £100’s
1. Do you have a quick release on the existing seatpost and use that to lower the saddle when you know a steep decent is coming?
2. What is the geometry like ie is it XC geo which is more inclined to send you over the bars?
3. Is your fork serviced/working correctly ie not just diving in to its travel with no rebound?
I currently ride a 2012 XC bike, and get the over the bars feeling alot ! I lower the saddle on steep techy decents, but it doesnt change the fact the geo is old and steep angled, and my fork is knackerd.
My next bike that I hopefully get in a couple of weeks will have a dropper post and they are so much more convenient, but they dont change the over the bars bit. The newer geometry and decent fork will solve that for me.