I just started using Summit, coming from Liftoff that seems abandoned and does not support Lemmy 0.19.
It seems Summit don't have the ability to show all posts from all multiple accounts in single view, either Subscribed or All. Something for the devs to consider.
AFAIK Liftoff was the only app to have such a feature. Whichever other app implements it first is likely to get many former Liftoff users so hopefully that acts as an incentive.
This isn't difficult to add. Most of the groundwork is already done by the multi-community work. In a way this is just a special multi-community.
The difficulty is around handling what account to use. If the current account is used regardless of which post you tap then this is easy. Is that what liftoff did? Or did liftoff also auto-switch account for you when you tapped a post that isn't for the current account?
Each post in Liftoff are marked with "via {instance-domain.tld}" so you would know which account will be associated with when you upvote or comment on it.
There's also the ability to switch instance at any moment, when viewing the post or community, so that sometimes when you found post from All feed but want to comment a post or subscribe community using other account.
If you have overlapping communities subscription in your multiple accounts, you could be seeing duplicates of the same post, but I think that was addressed in the last update as I don't seeing it anymore, at least before my instance updated to v0.19 where it made Liftoff no longer working for me. The duplicates post may appear more in All of all accounts. There's also Local of all accounts, but I rarely use it.
Yeah it seems like the multi-community feature, but this is an auto-populated multi-community feature instead, like the Subscribed community.
I stopped using Liftoff so someone else may be able to better describe it.
I used to have this account and beehaw signed in. When viewing my combined feed I would be commenting and voting from this account unless it was a beehaw post (as they defederated) where it would use my account there. Basically whatever account loaded the post would be in control.
This was nice with two accounts but I also had a lemmy.world account that I don't use and if I had it signed in to Liftoff any time I commented on a post from a lemmy.world community it would automatically make my comments come from the account I never used.
The difficulty is around handling what account to use. If the current account is used regardless of which post you tap then this is easy.
This is what I would have liked. I prefer to use one account unless there's a reason I can't (such as defederation) however I wasn't an active Liftoff user for long so it may be better to poll the liftoff community and see what'd they'd like. The dev has been MIA for months so I wouldn't feel bad doing so.
This feature can be implemented however due to how the fediverse works any implementation of this would essentially be "read only". Ie. You will be able to read posts but not comment on them or vote. The reason is because it's really hard to figure out which account should be used for any "write commands".