@R3D23R0 if by monetising you mean having stuff that you have to pay for then they do have bonus pack minions on their website casualcollective.com, though their main focus is definitely FB
It costs a lot to upgrade monster hatcheries, but the upgrades are useless besides allowing you to build an HCC. Upgraded hatcheries should be able to produce monsters faster because you're not going to need to make 300 of anything in one go unless you're trying to complete the Monster Margarita quest.
Unless you heard that there was going to be a 50% off sale from a TDP4 staff/moderator, then you don't really have a right to complain (yes, I know you're still going to complain anyway but the developers aren't going to hear you).
The main problem with this game I find, is that there's no sense of peril. If you die in the quests I'm not sure what happens but it's so hard to do that I'm not bothered about it and if you lose in PVP all you do is start your streak over again and you can't die in raids at all! It needs something like being able to duel people and staking an item each or a certain amount of gold/platinum each (both players have to be on at the same time).
The biggest mystery is how you can rebuild your buildings from a pile of rubble and ash for free and in a few minutes despite the fact it takes a massive amount of time and resources to build them initially -_- would be nice if I could put some more rubble in my yard and rebuild it into a level 10 Town Hall
For people stating out this game complete the challenge on http://www.kongregate.com/games/Mintsphere/trigger-knight for a cool sword but it runs out soon!
 "Bullet Heaven"){kind=icon}
 "Minions"){kind=icon}
 "Fantasy Online"){kind=icon}
 "TDP4 Team Battle"){kind=icon}
 "Backyard Monsters (removed)"){kind=icon}
 "Maze Crab"){kind=icon}
 "Hacker vs Hacker"){kind=icon}
 "Chronicles of Herenvale"){kind=icon}
 "Bloons Tower Defense 4"){kind=icon}
 "Elona Shooter"){kind=icon}