When this first came out, I really wanted to like it. Heck, when it first came out, I DID like it. I'm going to go straight to my pros and cons.
1) Classic Puzzle Quest gameplay - If you have enjoyed any of the other PQ games, the gameplay is back. You get 3 characters on your team, who provide 1-3 abilities each. It's still fun and addicting. This is not my problem with the game at all.
2) Big cast - There are 33 characters and counting in this game. Each brings something new to the table. Sure, several of the characters are different versions of the another character (there are 3 different Wolverines), but they usually play differently enough that you won't mind.
1) Poorly timed updates - In a game like this, nerfs are a fact of life. But nerfing a character in the middle of an event that focuses on that character is a jerk move. Especially now that they are introducing...
2) Tournaments with entrance fees - This might not be so bad if it had been there from the start, but as a new feature, it feels like the wrong direction for the game. To make matters worse, you can't find out the available characters for use in the tournament until AFTER paying the costs.
3) Rising costs - There are several neat features that were introduced as crutches to help players with weaker rosters, like Shields to protect against attacks in PVP and Boosts (extra starting energy or damage) to give yourself an extra edge. These started off being available at a decent price, but then skyrocketed without warning after everyone came to depend on them.
4) Speed-run - I don't know about you, but I like to play games at my own pace, and you can in this game... for the Prologue. After that, each chapter is available for a limited time and disappears at the end of that time. I completely missed Chapter 1 because of this and if you are starting now, it might be too late for you to see Chapter 2 as well. This is made worse by the fact that some of the fights in these chapters have opponents with levels over 200 (your characters are capped at 141 until you manage to level the very rarest characters) and the fact that some levels are UNPLAYABLE unless you have a specific character in your roster! Missing part of the story because you couldn't get a 4* Invisible Woman (the rarest character) is unacceptable.
5) Slow leveling - When I started playing, this was my biggest complaint, but I adapted to it. I would have still recommended this if it were the only problem. However, it is still a problem you should be aware of. Characters require THREE forms of leveling. First, you need covers acquire or level up your skills. Second, there is a very rare form of currency called Hero Points that can replace the need for covers, but you will likely need it for other purposes, because it is very rare unless you pay to buy more of it with real currency. Third, you need ISO, which is the experience of the game. At first, you'll think you are getting a ton of it, because low level characters can get a level after a fight or two. Once your characters start to get mid-level, you will need to win ~20 fights to level a single character by one level. With 30+ characters that have a max level anywhere from 50 to 230, you will need a LOT of ISO and even buying it with cash won't help because it is crazy expensive.
I love the gameplay and being able to play with Marvel superheroes. I was willing to cope with the slow leveling until the developers started making a ton of poor decisions that favored those who are insanely high-leveled or spending cash. I want to love this game, and if it had been released as a Single-Player game like all of the others, I probably would. But the way it is, I just can't.