Just get the $25 magnetic sheet and PEI plate, and slap them both on there. If you do go the route of a new aluminum bed, you can heat this bed up to 80 or 90C and then peel the heat pad off of it and stick it onto your new bed. I did both these on my old Sidewinder X2 but didn’t notice much benefit to the aluminum bed (the OEM glass bed was slightly warped and concave), so I didn’t find it worth the money to be honest. I think it’s worth trying in stages since you’re not really out any money if you decide the simpler and cheaper solution doesn’t cut it.