I tinhk one of the best features that they can add on the game market is the ability to chose to see the card price in dec, I don't have so much dec, so I always click the card and see if it's worth to rent or not. So if the display of price can be display on Dec or Usd, is a good idea.
Also in the market, I wish they could add a division summoners level limit meter, like for example if you set it in silver, all the monster level will be adjust on silver league summoners level limit,all common will be lvl 5, all rare is 4, epic is 3 and legendary is 2. It will be a good idea and will be so much help for new players because splinterlands player is growing.