The heroics that cap the seeker droid and macrobinocular quest series are fantastic. I think it makes total sense to have the actual exploration parts (e.g. scanning) only require a single player, but then have those lead you to combat scenarios requiring a "strike team".
While they are fantastic, the decision to make them H4's was a poor one in my opinion.
The first few weeks had thousands going through it and LFG spam was so constant, it was pretty easy to get it done. Fast forward to now, and those LFG are drying up, and can now be many days to get into a group for them, and what about a few months time? it will be close to impossible to get a group for, you may have to spam the fleet for weeks on end, but one thing is certain, it is much more difficult as time goes by, and that is poor design.
I think the answer is to make the heroics repeatable weekly with 5 elite comms as reward, that will make it enticing enough for some to want to do it, and help the people as they come along to this part of the mission to be able to do it.