The rental market is really important but i think its something thats on the Splinterlands team to do.
It needs more exposure in the game itself and it needs to be set up in the marketplace just like selling cards is.
Now, i know that is not connected to peakmonsters but maybe you could help develop it? I dunno.
Even myself that has maybe missed 3 weeks of play in 2 years just got reminded of how amazing it was renting a splinter for a couple weeks.
Its because the rental market lacks EXPOSURE
I never even understood how the renting works?