The very least with some modern function.
I know that:
"Save Points" are a redundant concept given most games these days have auto-save or manual save anywhere.
That they were exclusive to the original timeline.
That likely, for all we know, we the players can clearly see them while they were non-existent to Lara, given they were purely a gameplay mechanic.
But still, I always found these large, blue octahedrons both iconic and nostalgic for Tomb Raider games that, while I acknowledge Save Points being no longer needed, kinda hope they still worked them into future titles or give them new purpose. (Or the very least become a logo for Crystal Dynamics, given it is a crystal!)
For example, what if the blue crystals appear in Survival Instinct as marker for where Lara needs to go?
Or what if the Divine Source was a Savegame Crystal of the Survival Timeline?