I am absolutely in favor of keeping waste to a minimum.
Nevertheless, I would very much welcome being able to buy Yvette liquid detergent in a bottle (1-2l) for the first time; I find the wobbly refill bags rather impractical for dosing, but bottles are apparently only available for the curtain detergent (I don't need them) and occasionally, during a promotion, in 3-liter XXL size (I find them unwieldy, and not every single-person household wants to buy/store such large quantities of detergent at once).
Of course, you can always repurpose and relabel empty bottles from other products - without giving up hope (maybe I'm not alone in wanting bottles).