Re: Goons or any other high variance card
Those cards are fun when you're on the winning end of things, hitting that t3 Goons, but they're absolutely horrible on the receiving end. This is because getting and playing those cards first directly influences the other player. Having a Goons played against you on a turn where you had 4 Coppers and 1 Silver for your own Goons is devastating. Imagine your opponent getting 3 Goons turns in before you can afford your own. Not only did he get (at least) 3 VP, he got +$2 every time (helping him to get better cards, probably more Goons) and hampered you. So the effect works two ways, it helps the attacker and hurts the defender. Most attacks work like this, but are less brutal. The +2 Cards on Witch are helpful but not fantastic. Saboteur and Sea Hag are examples of attacks that hurt the defender, but don't help the attacker directly.
But we have to be realistic, Dominion is a game in which a good start goes a long way anyway. If you get an early Gold, that will help you to get more Golds and Provinces, it's as simple as that. If you're forever stuck in $4 and $5 land, that sucks.
Goons is just the type of card that exercebates (is that the right word?) this asymmetry and runaway factor. It's even worse because the piles can deplete really slowly. You might see a Goons player buying out the Great Halls first, then the Pearl Divers and finally the Estates or something like that, while the guy who is being pummeled is scrambling Silvers to get his own Goons going, too late of course. I wonder what Goons would be like when it gives you Estates instead of VP tokens...
It's a powerful combination: +$2, +Buy, Militia-attack and +1 VP token for every buy
I have less quabble with Monument because if your opponent is one turn ahead in getting a Monument that's not so bad, your odds might switch from ~50% to 45%, with Goons it's more like: Whoever gets and uses it first switches from ~50% to 75% or even higher.
Of course there is skill involved in using a Goons engine correctly, but if you're going full Goons with some Village you can't really fuck it up, not so bad that you're letting the early advantage go away anyway.