[Tl;dr on the below: the changes we make to Checkout are designed to increase our merchants' revenue. If a change doesn't do that, it will be reverted.]
The confusion point you cite was our biggest concern in building the "Remember me" functionality. On the one hand, it's clearly good for our merchants* if customers don't have to constantly retype their card details. On the other hand, it'd be bad if we were scaring them away with something confusing.
So we've been testing Checkout for months. After tons of testing across different sites, types of business, and devices, we're confident that "Remember me" does not harm conversion rate. On the contrary -- all the evidence we have shows that it increases it. If a business has a lot of returning customers, this effect can be very big. For example: we ran an experiment that simply removed the "Remember me" option on Humble Bundle, and determined that they would make less money without it.
To your point about being focused on customers: our rule is to always do what's best for the merchant. I want to really emphasize this point, because I believe it very strongly. The strategy tax example you cite is precisely what we insist we can't do, and where we believe other companies and products have gone wrong.
We've discussed the possibility of allowing users to hide the "Remember me" checkbox, and our belief is that having that option is probably not the best thing for the merchant. We consider it our job to optimize the Checkout in order to maximize our users' revenue. If we add more options, we can easily end up with something confusing and inconsistent. Having a ton of configuration options would also make it harder to pursue other ideas and avenues. The whole point of Checkout is to enable ongoing iteration and improvement. As a result, we'd much rather make the macro guarantee ("we'll work on increasing your revenue"), and build the infrastructure that enables us to do that, rather than forcing merchants to guess what particular tweaks might work best.
Still, even though we've leaned against doing so thus far, we're by no means strongly opposed to removing it. Perhaps, for example, we should have an option that doesn't show "Remember me" but will pre-fill the details if they've been entered elsewhere. Again -- our goal is just to do what's best for the merchant.
* We generally don't like the term merchant, but I'll use it here for clarity.
The confusion point you cite was our biggest concern in building the "Remember me" functionality. On the one hand, it's clearly good for our merchants* if customers don't have to constantly retype their card details. On the other hand, it'd be bad if we were scaring them away with something confusing.
So we've been testing Checkout for months. After tons of testing across different sites, types of business, and devices, we're confident that "Remember me" does not harm conversion rate. On the contrary -- all the evidence we have shows that it increases it. If a business has a lot of returning customers, this effect can be very big. For example: we ran an experiment that simply removed the "Remember me" option on Humble Bundle, and determined that they would make less money without it.
To your point about being focused on customers: our rule is to always do what's best for the merchant. I want to really emphasize this point, because I believe it very strongly. The strategy tax example you cite is precisely what we insist we can't do, and where we believe other companies and products have gone wrong.
We've discussed the possibility of allowing users to hide the "Remember me" checkbox, and our belief is that having that option is probably not the best thing for the merchant. We consider it our job to optimize the Checkout in order to maximize our users' revenue. If we add more options, we can easily end up with something confusing and inconsistent. Having a ton of configuration options would also make it harder to pursue other ideas and avenues. The whole point of Checkout is to enable ongoing iteration and improvement. As a result, we'd much rather make the macro guarantee ("we'll work on increasing your revenue"), and build the infrastructure that enables us to do that, rather than forcing merchants to guess what particular tweaks might work best.
Still, even though we've leaned against doing so thus far, we're by no means strongly opposed to removing it. Perhaps, for example, we should have an option that doesn't show "Remember me" but will pre-fill the details if they've been entered elsewhere. Again -- our goal is just to do what's best for the merchant.
* We generally don't like the term merchant, but I'll use it here for clarity.