I personally hate having to gift items to my side account, scrolling through all my inventory just to send one carcass to feed a lion. I propose adding a button in the hoard item screen next to the Discard and Bury buttons that says “transfer to linked account”. No need for the annoying notification or having to second guess who you’re gifting to.
This could also be helpful with lions. A button next to Abandon/Chase/Kill/NR that says “transfer”. This would only be a there if you have linked a side account. Also a mass transfer button like the mass kill/NR/chase option in caves could help move a bunch of lions from one account to another.

Both of these improvements could greatly help with freezer accounts. Say you have an RLC in heat frozen on your side for October but you want to freeze a couple of groupies there in May and egg yolks in April, maybe you need to freeze a surprise lethal or first gen. Instead of rolling over every time you need to freeze something on your side, you’d just need to press a button in your hoard or lion page!