Before you delete an entry because a game is emulated, check if arcade-history.com has the same useful information. If not, submit it for approval.
Game entries are almost never deleted. Instead they are changed to Category: Dumped.
http://mamedev.emulab.it/undumped/index.php?title=Category:Dumpedor some of the other "not-Undumped" categories.
http://mamedev.emulab.it/undumped/index.php?title=Category:Dumping_statusThe only things truly deleted are when games are named incorrectly, and occasionally if they were proved to have never existed. Even then, this is a wiki, the proof that the information was there is in there if you dig back in the wiki page history far enough.
I have pretty much direct editing rights (sorta like "moderator") to arcade-history.com (or at least I did) as does Osso, etabeta, SonOfPhoenix and of course Alexis is admin there. (Hm, I just noticed that Osso, etabeta, SonOfPhoenix and myself are no longer mentioned in the arcade-history.com footer... maybe he discontinued that idea in 2014, maybe nobody was doing it...)
However, it was nice to be granted these arcade-history.com editing powers but I almost never use them because I'm too busy with other things, so I usually just submit like any average person.
I send him emails when I notice big changes that need to be made. Alexis knows about the wiki, although I am unsure as to his mastery of it. Yes, it would be nice to have more links to arcade-history.com entries within the wiki, and more collaboration and communication, I agree.