I'm with you. Here is a request of mine for iFly to generate a HITS for Holding Patterns that are already depicted in IAPs as Procedure Turns or as Missed Approach holds.
I didn't branch off into Pop-Up Holds simply because they are not charted, and maybe tougher to justify. But I think a HITS for Pop-ups like that are a very good idea, being the type of horizontal situation that iFly can depict that a VHF NAV radio and HSI cannot. Just a couple of days ago, I uttered the "H" word and was advised as to the rarity of doing Holds. But I like to think about holds the way I think about fire extinguishers ... something that I have, and I'm proficient at using, but never needed to use so far, knock on wood ... and yet I still have.
BTW I've been looking at a GNX-375 as a way to get ADS-B Out and GPS Nav in one box. And checking the Pilots Guide, that navigator does indeed allow you to define a holding pattern either at a waypoint that is already in the FP or to a Direct-To waypoint. And as the video demonstrates, it helps to remove any ambiguity of what the holding clearance expects you to do. Now I just need to convince the folks down at the lottery office to help me acquire that kilo-buck box.
And as an aside ... I notice that Garmin's video randomly selected KBUY as a destination. So now if I am reciting "... KBUY. 'K BUY. OK, BUY! ..." in my head, could it be because of some sort of subliminal advertizing?