i have notice the profitability of the alt coins has gone down a lot. it takes about twice the time it used too from time scyptguild started until now to earn the same amount of bitcoins. i think the mining world changed some with the invention of scrypt asics.
It's more due to the mass adoption of multicoin profit switching. There simply aren't as many exploitable coins to make a profit off of anymore.
i have my private script where i add coins based on priotability or/and market prices [esp jumps!].
since i love btcguild - btcscrypt i dont use i suggest you to have a look on those:
SUN [best prof. few Times a day!]
LGD [i mine it when jumps in price - 1-2 Times a week, its still goign to skyrocket]
SHIBE - really goign good since 2-3 days
UVC - when shibe goes down, its the next one to look for.