I currently do a forward incremental while each week creating a synthetic full. The synthetics are old habits which refuse to die

A quick question or two
1. Forever incrementals. Do I ever have to worry about the original full backup becoming corrupt for any reason? Veeam crashes, backup fails for some reason etc. This is the main reason I do synthetics. It just scares the crap out of me

2. When changing the backup type from say reverse to forward, does anything special need to be done in Veeam, or is it fancy enough to work that out?
I'm also on Veeam 7. I see Veeam 8 has a new way on handling this?