On SteemPeak's future, my vote would be to just leave it "as is." Especially after reading that this is the least troubling option for you. While I do not spend much time on Steem, I still try to support those who were undercut by all of the changes and have been hurt by Hive.
It is my "go to" UI there and has been for a long, long time. I would hate to see it just no longer available.
Love the @swap.app option!