I went the other way. I used to have a couple of pi's which did different things. They kept on crashing as the sdcards were destroyed by much use - this can be

I went the other way. I used to have a couple of pi's which did different things. They kept on crashing as the sdcards were destroyed by much use - this can be changed by modifying Linux to use RO root (I thought of this recently when I made a secondary DNS box for my network). Now I have a low power Xeon server where I can create a virtual machine for any task and it's faster than the pi3/4 that I used before.