Currently Blue Seals etc. might be a bit too easy to find and fill your hand with if you play a hand and then have your full hand size to hold onto Blue Seals while discarding.
Another playstyle option this mod could provide: you must decide between Continue and End immediately after each played hand (if you reached the goal), before refilling your hand of cards. If you pick Continue, you refill up to your hand size but have to play another hand.