I fully agree, adding them as they are isn’t a great idea, especially if they are VERY old java maps, though I think Hive could definitely edit existing maps or at least maybe allowing them to be played in Custom Servers?
There is a topic about voting for three Java maps, I suggest you vote for it here (Sequoia, Pineapple Port and Hotel California)
I personally think hiding should be rewarded over running as encouraging running would make the game much harder than it already is for seekers to win the game. A way to make hiding more fun and rewarding could be the reintroduction of block levels, jump/dropsoliding and buyable blocks from Java.
Check this suggestion here
I agree, though there is a topic that supports this already here
Doors were made uninteractable to fix the “Annoying Door Sound Glitch”. Hopefully there is a way the Hive can fix this but a suggestion already asking for their functionality to return can be found here
Kingston, Goldrush, Hospital, China Town, Talavera, Town Square, Pripyat, Office (CS: Office on Java), Sunset Terrace, Nexus City and Humbug Street (Humbug St. on Java) Are all Ex-Java maps. Hope this helps !