Suggestions for renting system of Splinterlands

It's pretty hard for a player like me to get enough power to keep at Silver II.
No doubt - my renting cards are cancelled again!

You may ask: why don't you try to get to Silver I?
Renting to enter Silver I needs 70000+ power, while for the last day of a season, you can rarely find cards with over 100 CP/DEC per day, which costs more than 350 DEC and I can't afford it. For 40000 power I already needs 80~100 DEC/day to keep at silver II, it's not so good to bet on the quest chests.

You may say: The average estimation for a chest value is 56 DEC,
you can still earn DEC, right?
Loot chest value

Come on, haven't you being laughed by 1 or 2 DEC while opening the Chests? 🤣

And another issue is I keep trying to get some cards cheaper and sadly to find out I ran out of resource credits.
It's not really a healthy renting system right now. Too many renting would be stuck at the last day of a season, and failed transactions all over the system while people who don't have enough CP are stabbed in the back by cancelling the renting.

Here the suggestion for the renting mechanism: (In my opinion applying some of them may help)

1. Let the owner set a maximum renting period for their card and then when they want the card back, mark it and it would be unlisted from the market after this period of renting.
2. Extend the getting back time to 24+remaining time in a day. (e.g. if 2.5 days are left, cancel should be executed on the last day(1 day left)
3. Punishing canceling operations. The owner pays a double remaining renting fee back to the renter(and the renter pay another 5% fee to market)
4. To balance, the min renting period could be set to at least 2 or 3 days to prevent renters from only renting one day and encourage players to climb up after a new season starts.

It would good to keep most of the transactions valid at the network,
in that way, fewer energy consumed and the market prices would be smoother rather than jumping back and forth.