Could you ever get behind a band who replaces the main vocalist/singer either because they left or passed away?

Depends on the replacement I suppose. Gotta admit that I like some songs from Van Halen after they brought on Sammy Hagar. But Linkin Park should’ve rebranded themselves after Chester passed away. I really can’t get behind them at all now.

Ac/dc did a good job after Bon

Left alone, hence Alice in Chains.

The next best singer usually takes over.