maybe have a look at Zcash,Peercoin and even,forgive me Lord,Bitcoin cash?
ZCash is a solid option. Anyway, I would limit it to not more than 5 different coins, because more coins=more work for support=slower answer...
What do you mean zcash is a solid option? I think there are always other coins that be better than zcash but you chose zcash. Btw by limiting your coin into 5 coins is a good thing but to think that if you apply more coin, then you must need a shapeshift so it does not bother your support. I think this is really a good way to keep your support be active and you can apply more coins too