Pvp in this game is utterly painless. So you lose a small amount of honor, big deal... there needs to be more rewards/consequences for winning and losing imo. I have played many browser games in the past and in fact have usually been atop the leaderboards for most due to my aggressive and competitive nature.
One aspect in particular I enjoyed from other games was the ability to loot (for example): 10% of whatever amount of coins that player had onhand at the time. This simple feature alone would most certainly reinvigorate dueling which atm is rather boring imo. Nothing more exciting than say hitting a player for 50-100k+ coins per pop.
Players trying to hoard coins for the big spender deeds would become human pinatas and quickly targeted in guild chat until their coins were heavily depleted. Imagine the fun!
Now before all the crybaby carebears jump in and say "No don't let my coins be ransacked!" allow me to enlighten you how Playata could benefit from this scenario:
With 10% loot onhand added more players would be tempted to buy the 50% skill booster for nuts whereas now it may not be a priority for some. You could also introduce a new booster perhaps as well. Something along the lines of reducing the amount of coins stolen from duels lost: 10 and 25% for coin and 50% for donut (same tiers as we have now). This way a player could at most only lose 5% with the best shield booster and with attacks being limited to 3 daily anyways, this would not impede progression.
Personally I think this game desperately needs this feature to make dueling more fun and rewarding. Hitting the same ppl over and over daily for piddly amounts of honor and coin just for the sake of deed completion is tedious and boring. Make consequences for losing and give rewards for aggressive players. The game and its players would most certainly benefit imo.