Don't count out Mercedes' ability to come up with a seemingly overly robust lineup of models that cover every conceivable variation/combination of needs for the luxury SUV consumer.

I mean sometimes I think "who the hell needs a GLB AMG??" but it's one of the few SUVs of that size that seats 7 passengers and serves a need for families in certain EU and Asia markets.

Any given Mercedes SUV may be niche luxury but they cover many many niches with their lineup.