I believe we all agree one disadvantage of using XMR is that u need sync the hole blockchain since day 1 to be able to get your balance and spend your coins and when older is your wallet, bigger is the number of blocks to be scanned when u sync in a new device.

What if we could create a "landmark transaction"? An order to send all my coins to my own wallet paying an ordinary transaction fee. So if I just want to check my balance quickly I just sync since my last "landmark".