Alternative to having the icon in the app bar of the Queue screen, I thought about having it in the full player screen. It makes sense there maybe even more, but it's already quite full.

Replying to #6836 (comment) from @ByteHamster:

The history button somehow breaks the conceptual hierarchy of the screens. To me, the history is a top-level screen, not a sub-screen of the queue.

I don't see why playback history would need to be a top-level screen. It is not a main feature, but a supporting feature. Main feature: playing an episode. Supporting feature: finding back what I played yesterday, so I can share it with colleagues when discussing in the office kitchen.

Currently the app hierarchy is "flat", eg there is no second-level episodes list. Moving screens to be sub-screens of others would break that. There are users who hide screens (a friend of mine hides the queue and only uses the "all episodes" screen). These users would then not bee able to get to these sub-level screens. That's like with people being confused about not finding the Echo screen, just that it's an actual app screen, not just a promotional thing.

I would vote to not make any screen a sub-level thing because that reduces configurability

Currently the app hierarchy is "flat"

This is not entirely true: the Statistics screen is already a sub-screen under Subscriptions. So this proposed change doesn't 'break' a full-flat architecture.

There are users who hide screens (a friend of mine hides the queue and only uses the "all episodes" screen). These users would then not bee able to get to these sub-level screens.

And for that reason we need to be very careful what screens we put where in the hierarchy.

But as noted in the first post, the playback history provides secondary functionality, thus can be demoted in hierarchy.

Moreover, the proposal is to also make it accessible from the player screen, which cannot be disabled. So this argument is not relevant in this case.

Currently the app hierarchy is "flat"

This is not entirely true: the Statistics screen is already a sub-screen under Subscriptions. So this proposed change doesn't 'break' a full-flat architecture.

There are users who hide screens (a friend of mine hides the queue and only uses the "all episodes" screen). These users would then not bee able to get to these sub-level screens.

And for that reason we need to be very careful what screens we put where in the hierarchy.

But as noted in the first post, the playback history provides secondary functionality, thus can be demoted in hierarchy.

Moreover, the proposal is to also make it accessible from the player screen, which cannot be disabled. So this is an irrelevant argument in this case.

I would vote to not make any screen a sub-level thing because that reduces configurability

This is true to a limited extent. But where the functionality concerned is supporting rather than main functionality, I think a slight loss of configuration in favour of general usability is justified.

(And as mentioned, this will contribute towards bottom navigation, where configurability would be decreased slightly anyway.)

Regarding bottom navigation it doesn't really matter how many screen there is in lateral bar. IMHO bottom navigation should be limited to the 4 top items and have an additional "..." button opening a menu to access other screens in lateral menu.

About quick access to history I agree it could be nice being able to access it from your default screen, so I would say queue, inbox, episodes drop-down menu.
I don't think it should be in full player view. There I would keep only settings to current playback.