ZDoom

If this piggybacks off that one suggestion of making sprites offsettable, that'd be perfect.

Basically right now you can easily use rollsprite to make one of these wobble
https://www.amazon.ca/Century-Bob-Body-Opponent-Bag/dp/B00329TVEM?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duc12-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00329TVEM

but not one of these
https://www.amazon.ca/Everlast-Powercore-Nevatear-Heavy-Bag/dp/B004CY3VD8?psc=1&SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duc12-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B004CY3VD8


If exact coordinates are unworkable a rollaxis property just for up/down (maybe 0.-1. (or even lower or higher #s for a bigger offset) as a proportion of the sprite size?) would be nice too.

Can you demonstrate what you need? I really don't see any trouble on placing a sprite of lamp on a ceiling and why it should be rotated?

Center or 0,0 coordinates is extremely limiting. Creating anything like a swigning ceiling lamp while also making it solid an easily placable in the map is very awkward. We really need this.