Just thought exercise. NOT any particular recommendation NOR any critique of anyone's choices.
First doubt if reef centric halides will disappear anytime soon.
Problem is it is based on how much $'s manuf can make off of them. Small lot product, niche market.
Biggest "threat" seems to be ceramic metal halides which atm do not come in reef friendly (general opinions) colors.
not even going to say color temp because most of that is BS anyways.
BUT since they use different bases, different ballasts major users (not aquariums of any kind) are faced with the same replacement choice as they would in deciding mh or LED.
As to MH's being simple and LED complex well.. neither is exactly true.
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"complexity" of Radiums i.e ballast choices color rendition ect.
As an example of led's being "simple. Sanjays run the Radions full.. sit back.
Nobody needs to ramp on off.
As to intensity ect.. both techs benefit from REAL world measurements.