THIS IS NO LONGER MAINTAINED SINCE DRAGONFLIGHT.

I'd suggest Raid Frame Settings as a replacement. Disable all modules except buffs, then tweak as you like.

Bigger Buffs

Tweaks Blizzard's raid frames buffs, mostly aimed at healing.

• Show more than 3;
• Change size;
• Split rows;
• Show hidden buffs, hide buffs.

Why would you stick to default frames? Ease of configuration and predictability are some of the pros. You don't need to add a list of "debuffs to watch" on every raid tier.

Options: /bigger.

Dragonflight status

• Taint issues all around. No solution in horizon…
• You probably can do a whole dungeon but will need to reload frequently between runs

See also 

• Flat texture pack for Blizz RaidFrames. Put those files in <wow>/Interface/raidframes (where did I find this? I dont know)

Contributing

Github: https://github.com/wkrueger/biggerbuffs