Good Stuff
I've got that heavy tackle spin covered with the Saltiga Hiramasa & Stella 10000 / Saltiga Expedition 5500 ..... & you are correct that the shorter jig sticks can put a lot of hurt on big fish . It's the next tier that I'm trying to fill ....... an outfit where you could cast out a big bait / livey & not be too worried what might come along ....... so it needs to have good low down power but be still reasonably light in the tip. It would be the kind of outfit that you might take to NZ or South Australia to fish for their big snapper.
I don't do much deep water bottom bashing ..... but I agree with you on the heavy lead situation and overheads . This outfit would be used in setting deeper live baits ....... & that is where spin gear with the exception of baitrunners fall over - I also like the control of a lever drag in this situation ....... It's the way to go The hard part is deciding on what size considering most of the waters I'd be fishing will be less than 100m & closer to 50m ...... so 250-300m of 40 or 50lb Braid would be plenty - so 12s/16s possibly 20s sized overheads will do just as long as it can put down 15kg of drag. This will probably end up on a 6ft rod (whatever that may be)
PS - still find it fascinating about the use of these really big spin reels ..... but if you are fishing 80lb in 100m for big reds (Emperor) .... I guess you need it
Chris