Aura Simulation & Tracing
A way to simulate buffs and debuffs to test what would happen in an actual gameplay scenario could be very useful in troublehooting. i.e. would they get past the various filters using whatever priority is in place and would they appear? And if not which filter (if any prevented) it from appearing?
Something like /elvui auratrace unit_party 228054
And then report back which filters affected (if any) that spell ID). Maybe something like
...unaffected by Blacklist ...unaffected by FilterX ...unaffected by FilterY ...allowed by RaidDebuffs ...filter processing complete, buff will be shown