Honestly the biggest problem with BE is that it just feels bad

And it doesn't just feel bad, it feels bad on multiple levels:

• You can play a day's worth of games and get absolutely nothing 50 BE. This actually happened to me with 30 to 31, which took me 10 games with an 80% winrate and two first wins.
• Because you actively have to disenchant stuff you are far more aware of how slow your progress is, compared to IP which was fairly passive. I often forgot about IP gains entirely but boy do I notice when I get piddling amounts of BE (even though I'd gotten probably about the same as I would have with IP)
• Milestone rewards and champ mastery cost thousands of BE, so even "rewards" feel like traps
• The "worst-case-scenario drop" issue of 2x 450 and 1x 3150 shard from a capsule feels fucking terrible and it's pretty common. This is actually one of my biggest gripes with Overwatch's system too, where you'll get 3x white and 2x blue and it just feels worthless
• Chests got nerfed to hell which means that key fragments / honor rewards mean less too

TLDR: It doesn't even matter if BE is worse numbers-wise or not because it feels so godawful to do anything related to it