I would bet that the only things you would be missing out on are things you probably dont use in the first place. I am in the same boat in that I dont use half the features an HDS offers, but I still have HDS units. Onboard diagnostics like linking to your outboard, etc are some of the types of things I dont think you can do with an elite unit. Otherwise I am pretty sure you can still link units together to share waypoints. You can control motorguide trolling motors from them, do active target if you have that as well.
When I upgrade units I always look for leftover prior generation models. I just bought 2 new HDS 9 live units 2 years ago when the Pro model came out. Saved like $1000 per unit.

Posts: 25214
April 15, 2025 at 7:08 am
#2330199