Have not dug into the R7000 that I got 3 years ago at SEAPAC, it had every scan, memory and speed mod out there plus the IR remote. But I do not think that the 7000 memory is volatile like the R71A is that it looses firmware programming when the battery goes dead.
Every once in a while there are auctions for buttons from other Icom radios on Ebay, years ago when scrapping other electronics I used to keep the buttons, pots, jacks and switches for spare parts they are bound to be used on more then one device.
David Kb7uns