Those 10 are not a bad final 10 to go. Most of the time on complete sets, the final games would be some sports games or several expensive games that were really not that great to play. But when you are finishing with Dragon's Trap and Ninja Gaiden, it makes the final 10 a lot more fun.
As another side note. Dragon's Trap is one of the best. It's Sonic, Phantasy Star, and Dragons Trap as being the best Master System games in my opinion.
Are you collecting the cards or going for the carts? I personally prefer the carts. This is another reason I'm not too upset about getting another region's Buster Douglas. My Sega Card games are primarily the cart versions from other regions. Except Fighting Falcon, I don't believe that was ever not a card. This card-only format might go in line with the game using the old SG-1000 video mode...