If you have a lot of maintenance opens, you can't see the latest ones, because there s too much entries (1000+).

I'd need to filter by date (Like we can for item values), and by server, instead of only by server groups

Use case :
If you have 500 servers and update maybe once every 3 months , thats 2000 maintenaces per year (if you script that using api, the count goes up really fast).
If a customer ask us for a past downtime, usually he gives me a server name and a time , then we can try to answer and justify this by a maintenance. (hence why the filter by server name and date.)

I added a new maintenance yesterday. Today i wanted to extend it, but if sort by date or reverse date to get the last created ones, it doesn't display, the most recent maintenance, is 2015.