Great idea, I think you aren't 1st person who does lose buffs cause of skills that have chance to appear. Can imagine tanks buffs maintaining being specially hard cause of that. I am having issues keeping my buffs on hound during farm (specially in SoA - one more buff appears + collecting maguen plasma), making things hard. Not to mention getting Elite Maguen pet in that scenario would be rather just possible if i delete half of my buffs so...
Definitely a BIG +1! Cheers