>>1525583>poor range of gearingUp to 14 non-overlapping gears with 500% gearing range can be archived with an IGH since the late '90s.
That gets them the same range as SRAMs 12-speed dinnerplate-cassettes with two more speeds.
>expensiveDepends on the type of hub, there are cheap ones and there are expensive ones.
Same as with chain shifted drivetrains.
From the 3-speed Shimano Nexus to the Rohloff Speedhub 500/14 just like from Tourney to Dura Ace.
>heavyNot much heavier than their counterparts in most cases.
>can't service it yourself or replace it on the cheap if it breaks.Incorrect, you can be service it yourself.
Most hubs just require an oilchange every year or so and are pretty much bulletproof.
>chain can't be un-tensioned on a whim for easy chain service & replacementIncorrect, you loosen the axle, loosen the torque-arm, move the wheel forward and drop the chain.
Alternatively there are chain tensioners available.
>no MTB optionsThey don't need a special MTB option if they can be used in MTB as is.
