The trophy points you mean?
I guess they could, but it would just be "more", which itself isn't that interesting.
I was curious if there'd be other options, but apparently not

.
Camikaze asked me about that a few years ago when I mentioned the different reasons we get trophy points over at TrekBBS (that forum made the jump from vBulletin to XenForo before we did, in a way that let us test drive the features and report bugs before the final switch was made).
I've given it some thought over the years; it should be something uniquely civ/CFC-related to make it interesting and fair to everyone, like not having something impossible for most people to attain. TrekBBS awards trophies mainly based on post count, as post count determines your Starfleet rank. After 10 years I finally made it to the bottom rung of the admiralty (there are two more ranks, but based on my posting history, it'll take another 10 years to get there; I already have over twice as many posts here as I do there and I've only got a 2-year head start here).
So of course there are trophies for joining the forum, reaching post count milestones, garnering specific numbers of "likes", and so on. Just yesterday someone there asked about points and trophies, as she'd become confused about post count, trophy points, and ranks (she's still a flaptain, thought she should have reached Commodore, and was confused as to why some people were vice-admirals, some were admirals, some were fleet admirals, etc.). She's something like 200 posts short of reaching Commodore. If that were me, it would take another year at my rate of posting there, but sometimes knowing you're within close reach of the next rank means you're more motivated to post faster.
There's one guy there whose post count is literally off the chart by any forum's standards. No new rank has been created for him, and no new rank lounge (hidden forums accessible by people of specific ranks) either, because what would be the point? He'd just be sitting there talking to himself, probably for years before anyone else caught up.
So if there is a way here to create new reasons for trophy points, I'll give it some more thought. I've never seen the ACP of a XenForo forum so I don't know how much extra work it would be for staff.