Suggestion for better Harbinger's Orbs

Currently the somewhat rare Harbinger's Orbs upgrade a map to a random map of one tier higher, with a small chance for it to turn into a Beachead of equal tier. For me (and I would assume most other players), this means that Harbinger's Orbs are best used only on the highest tier map possible to upgrade: tier 15. This means that a Harbinger's Orb, when used, can only produce FOUR possible map outcomes with the addition of a Beachead. This seems like a waste to me.

I feel like the better use for a Harbinger's Orb would be, since we already want a tier 16 map outcome, to turn ANY map of ANY tier into a tier 16 version of the same map (with the possibility of a Beachead based on the tier of the map remaining).

I believe this would make Harbinger's Orbs much more useful to players as it would not only allow us to more easily acquire tier 16 maps, but also let us run more maps that we like while playing in the highest map tier. Thanks for reading.