Can a standard Blu-Ray player even play discs larger than a BD50?
It depends on the technology behind the 100GB (triple-layer OR 4-layer aka 3BDXL or 4BDXL, reflecting surface, aso…), and on the player obviously.
In January 2007, Hitachi showcased a 100 GB Blu-ray Disc, consisting of four layers containing 25 GB each. Unlike TDK and Panasonic’s 100 GB discs, they claim this disc is readable on standard Blu-ray Disc drives that are currently in circulation, and it is believed that a firmware update is the only requirement to make it readable to current players and drives. In December 2008, Pioneer Corporation unveiled a 400 GB Blu-ray Disc (containing 16 data layers, 25 GB each) that will be compatible with current players after a firmware update. Its planned launch was in the 2009–10 time frame for ROM and 2010–13 for rewritable discs. Ongoing development was underway to create a 1 TB Blu-ray Disc. (https://en.wikipedia.org/wiki/Blu-ray)
So I’m not sure that BDXL are readable by all players, and I would avoid those big BR…