Idolenz
I would want to know when stuff gets changed like it is already done when year lines are moved etc..
Since I doubt the Numista Admin team has the time to send out a PM's on every page and line change considering the current numbers in each. There are only a about a dozen individuals that have access to the information and dealing with a total of about 700,000 varieties.
Coins - 481,258 varieties for 203,114 coin types • 4331 issuers in 284 groups
Banknotes - 103,721 varieties for 37,498 banknote types • 4187 issuers in 216 groups
Exonumia - 113,160 varieties for 98,256 exonumia types • 887 issuers in 354 groups
Since Numista is a collaboration of information from the members why not start a Forum topic say titled “October - Coin Changes” or “October -Banknote changes” or something similar for those that are interested. Just for members and possibly admins to post what changes occur in a given month. Much like the duplicate entries post, not a lot of comments, just the needed information. It won't catch everything but it should help with the concerns you have.