First of all, regarding the "pushing" mechanic in battle, I've found out through Siliconera, that apparently, players are able to push their opponents into magic spells set up by their allies. I'd like to (ideally) get another source to confirm this but it does seem to make logical sense. A character's weight is determined by their body type and equipment. If your character is heavier, you can shove a monster into a spell. (One would imagine that there's some sort of limitation to maneuverability to compensate and prevent players from becoming too over-encumbered. Whether or not this is true is merely speculation on my part, but it would not seem very fair for, say, a small character such as a dwarf or kuripo to be able to push a large monster such as a King Slime and still be able to maintain their agility.)
Other than that tidbit regarding the gameplay itself, sales of the game have been a bit dismal in the sense that in it's first week of release (in Japan) only 384,061 copies were sold. This is drastically lower than the initial launch of Square Enix's previous installment, Dragon Quest IX: Sentinels of the Starry Skies for the Nintendo DS (2,338,221 units sold within the first week). Now, granted that these respective games are on completely different platforms and that one has to consider Dragon Quest X's deterrent of a required subscription fee to play online, Dragon Quest titles have a tendency to usually break the 1 million mark during the first week. For instance, Dragon Quest VIII: Journey of the Cursed King for the Playstation 2 sold 2,267,827 units within its first week and Dragon Warrior VII for the original Playstation sold 1,821,450 units. Now, there are a lot of other factors at work with regards to the sales figures, however, I hypothesize that the true deal-breaker for most consumers was the required subscription fee to play online. It is quite possible though, that many gamers (such as myself) are looking to wait until the Wii U version is released (as many people sense that the Wii is at the end of its life-cycle and that there may be better content on the Wii U version.)
The game does offer a somewhat limited offline mode in which you play as the main character's sibling and get to play through a separeate side-storyline, but that's only equivalent to perhaps 10 or so hours of gameplay. The rest of the game really needs to be played online and unless it's during the "Free Play" period, you'll have to shell out some cash. In Japan, the fees are as follows:
Author's Note: I highly recommend that you take a look at the links I've provided below. There's plenty of information, most of which I've only merely brushed up upon. I intend to modify and edit this particular post when I find the time.