According to what was already known but reemphasized in latest article on Jollausers about (1) status bar and (2) 9 covers max, I really hope three things will come up from the community:

1. A Glance-like feature, i.e., LPM-ish screen for LCD (probably only part of the screen lit, and probably at very low intensity to save battery). JollaHQ confirmed that LPM-ish is possible on LCD screens, but I'd say they won't do it themselves. With a kind-of-LPS, it would be easy to keep track on clock, battery and missed events without having to touch the device. That won't replace a status bar, but it can be really helpful when driving/biking/running/being in a meeting (I hate having to touch my device to check such info when in a meeting, everybody would think I'm checking social accounts or that I need to check clock because the meeting is boring; without touch needed, you just look at the phone on the table).
# Might not be doable or relevant energy-wise if whole screen has to be lit, which is basically the case with LCD; don't know if a workaround could be imagined. Using proximity sensor to disable the display could save a significant amount of power though.

2. A way to rearrange/reorder running apps when in the "close list" view. This list already appears after a long-press on the multitask screen by default and show apps running, not only the 9 covers if I understand correctly. However, this screen doesn't allow rearranging those apps yet. Allowing rearrange/reorder would allow seeing all running apps at the same place (not just 9 on a view and the rest on another view) and deciding which ones are going to be displayed when back on the multitask view, even if some came to foreground because they were used/updated more recently. Some apps will have covers less interactive/useful than others too, so a way to lock the 9 covers displayed would be cool. And a way to directly maximize an app from the "close list". That way it would act as an Alt+Tab with less info than covers, but exhaustive, and default Sailfish behavior would be kept because you'd have to longpress to show that list. Horizontal swipes on the multitask view (9 apps/9 apps/9 apps/and so on/and you Jolla explodes at this point) would be perfect to be honest, but it seems more difficult to do and may conflict with other Sailfish gestures. Prev/Next buttons or scrollbars are alternatives too. I just add the "close list"-rearranging idea because a sailor said this could be imagined for a future update (could, no promises), so I guess it's technically doable.

3. A way to force new instance of an app. The 9-cover-system constrains apps to a single instance, except those that, in their pulley menu, have an option "new instance" like the Terminal probably. However, multiple instances of SMS or videos or file manager or emails (emails can be very useful in two instances actually) can be VERY useful. Could we imagine a special gesture to do on an app icon to force it starting up in a new instance instead of restoring the session that was already running? Could we take advantage of multipoint, like with a finger touching a corner of the screen while the other taps the icon?