I think it would be a nice to have (to include late submissions in the feed/gallery) but at the moment it would be more of an itch.io feature request as I can't do this on my end. However please note late submissions won't be eligible for prizes.

In the meantime you can post a link to your game in this thread, so at least we might have a look?

I believe that FTR jam will be back in 2018; maybe a long time to wait, I know.