Spouse has Elite LTF. Corporate tie up.IMO you should close following cards,
Axis Privilege
ICICI Amazon
ICICI Platinum
ICICI Sapphiro
ICICI Emerald PVC
SBI Simply click
BOB Snapdeal
Kotak PVR
Keep the Vistara co branded cards as the milestone benefits are pretty good and you can use them for manufactured spends (spends of friends and family).
How did you spouse get SBI Elite as LTF please share some insight.
About cards close suggestion by you, I will close most of them.
I always use Amazon so keeping that card & SimplyClick was my first card, so keeping this both for now.