LK7, GLX, BUK, MPL, COL and others are no different than GRA. Having solo'd them all, its easy for me to see the similarities.
Some have many orphans, some are PoS only... all are very problematic. Copy n paste coins.. period.
In a sense all coins after bitcoin litecoin,ppcoin and primecoin are copy and paste coins as they bring nothing new. The question is how the coin is handled after it appeared. You have seen my short discussion with LK7's dev. Most of these clones have no ongoing support from the devs after the coin is launched. Here I found an active developer who I decided to join when he offered.