I'm fairly certain that the general discord consensus is also in favour of doing something about them. However, I've never really been in favour of censorship of any kind but some of those trades are ridiculous. I don't think anyone should run around deleting them but maybe something like trades outside a certain ratio range don't display unless you specifically ask for them to do so. There are plenty of options but I'm happy to leave it with the devs to figure out which one makes sense and doesn't mess with the working of the platform.
I'm far from certain that a general expiry date would be good or work properly. However having it as an option where you set your own expiry time would be excellent, a range of standard options from a drop down or something similar should do the job quite nicely.
What I'd personally like to see is a "counter offer button" let's say I'm slightly short for the full trade but could offer something cover the gap offering 3 Mdex or whatever to make up for the last 5k sats or something along those lines.
If that counter offer button gets put in, it should sort of go with a few tick boxes for "will entertain offers of" or something like that so we don't run around wasting each other's time.
It really is a fantastic platform and the further development of it is wide open and in the hands of capable people. I haven't felt excited about a crypto project in ages except for this and rvn. I think both of them have the potential to go extremely far

I would love a counter offer, or the ability to trade a portion of the full offer. For example if the trade is looking for 100 MCT+ and I have 70 I'd like to be able to fulfill that much of the order - if the poster is willing. Something to split the order would be an interesting piece.
I am not in favor of censorship either, but some posts are just clickbait and I think if a user gets burned it is only going to cause hard feelings and resentment.