I have bought an used T470 for Uni and so far it has been the best laptop I have ever had, and when times comes I need an upgade i wonder how much upgradeable a laptop like this can be.
You can upgrade the RAM, have two drives (1x SATA, 1x M.2), and you should be able to swap out the Wi-Fi card with one that supports Wi-Fi 7. It's also very likely you can replace the battery fairly easily.
If this is your first time opening a laptop, read as much as you can before buying or opening things up.
From what I can see on the spec sheet http://static.lenovo.com/shop/emea/content/pdf/ThinkPad/TSeries/Lenovo_T470_DS_EN_2.pdf
You can upgrade the RAM, have two drives (1x SATA, 1x M.2), and you should be able to swap out the Wi-Fi card with one that supports Wi-Fi 7. It's also very likely you can replace the battery fairly easily.
If this is your first time opening a laptop, read as much as you can before buying or opening things up.
And to add to that, don’t forget to consult the maintenance manual that Lenovo puts on its support website