I’ve seen a trend both here and in game, of people trying to suggest that defense items in their entirety are a waste of time in 5v5. Now I’m not a numbers cruncher, and I’ll leave it to others to figure out when I should build an Aegis and against which CP items, but FoR IMO is still a must have.
I have played a few games where neither team’s Captain/roam/suppport had a FoR by mid game, and lucky for my allies they had me on their team. As team fights become more prevalent in the mid game into late, which team do you think wins a 4v4 or 5v5 encounter? The one with or without the FoR?
The FoR is also good IMO for your 1v1 lane matchups. (again mid game) Heroes that excel in bursting or poking you out of the lane can easily overcommit to trying to finish you, you fountain and finish them, especially if you’ve traded before, they just don’t expect you to suddenly have the heal even if they’ve seen it in your inventory.