* Ability to connect to multiple WiFi networks at once (already possible with firmware mods).
* A worldwide shift to MPTCP or QUIC to handle IP address changes without disrupting user traffic.
* A VPN/gateway to tunnel legacy traffic which isn't QUIC or MPTCP. Google already does this for Project Fi
* Preferably the ability to subscribe to multiple phone networks/cells at once to avoid the few hundred millisecond gap in data connectivity when switching cells. Mediatek devices can already do this with firmware mods.