Though I have not play the game far enough to judge other mechanics but the base foundation of the mechanics/monetization in this game are essentially off any form of Chinese mobile games, they are VIP benefits, Monthly gem packages, Gear set bonus (more likely a West/Korean game mechanic), Multiple Servers with addition of Limit Breaks which is a Japanese game mechanics.
Lets talk about it one by one.
1) VIP (Prestige in this case)
This is essentially ONLY for players that are paying, as a f2p user or any players of low-medium spending you will probably not use this benefits but instead use your gems to summon stuff when there's a rates up on units/gears.
Which meant casual players will never complete with high spending players (aka Whales) in an environment of a case where there's any form of battle between players, Arena & maybe future Guild PVP.
This might not seems like a big deal since Whales will be whales you can never beat them in any game, but with this VIP mechanic it further widen the gap between Whales and the rest of the players compared to games mechanics of Japan which are usually more friendly environment for players who doesn't spend as much as whales.
The main problem is this mechanics is that it works wonders on SEA/China markets, let's be honest, the countries there are starting to get rich really quickly because their countries economy raise quickly over recent years which results in the poor and uneducated becoming rich thus the reason why you see the bad reputation of Chinese tourist hitting headlines every now and then, they spend on whatever they want and does whatever they want without much thought.
2) Monthly gem Packages
I'll keep it short, it's fine as it is but with VIP system it further widens the gap.
3) Gear set bonus
Like everything it seems fine at the start until when you start to see certain set gears exclusive to boss drops/equipment summon/VIP benefits which in the ends comes down to widen the gap between players, players who spend more gets more, it's a form of gambling, it encourages it, it works as it earns $$ for the company, in Japan, they even go as far as to even have a law now to prevent future games from having this mechanics.
Explaining Complete gacha - (http://www.serkantoto.com/2012/05/09/ko ... e-history/)
4) Multiple Servers
Having multiple servers is easier for company to manage, it stress less on the servers it's good for the company but bad for the players, it meant that new players in new servers can't co-exist with old servers, it's not like PC mmorpg where you can switch servers, in mobile games it's fixed, you can't play with your friends when your server is full, they can't join and they have to play in new server.
Besides company usually has special events/benefits for new servers to encourage new players to join and expand their playerbase.
5) Limit Breaks
Another gambling tool but it isn't as broken as Gear set bonus since the pool of units is far less than the pool of different set gears you can obtain in the future, but the limit breaks mechanics this game uses are base off old Japanese game mechanic which results in more $$ for the company.
In this game you need the EXACT copy to break limit, modern break limits mechanics in the case of dupe units will instead give players limit break runes which in turns those runes can be use universally across any units that can be limit break.
Conclusion
I understand that XII Braves may lack resource and they extended to Funplus for help, for those who don't know Funplus, it's a China company which makes DotArena famous, the game is like Hero Charge and the game monetizing mechanics are the same which are used in Valiant Force, thus far many new games from China/SEA are using that exact same old monetizing mechanics which results in the same of gameplay and even has paywall which are obsolete in modern gacha games but still works in the region of China/SEA.
Though there's no shard system in this game like any typical Chinese game but it was replace by equipment/character summons & limit breaks.
This mechanics probably will not be changed nor any words I wrote impacts on anything since XII Braves probably already sign a contract with Funplus and will carry on with their plans.
tl;dr, Valiant force has game mechanics & monetization base off Chinese mobile games with a little innovation via gameplay & has the artstyle of Japanese mobile gacha games.
I know my voice alone is weak, but I hope this gets across you guys and understand what future games of SEA will be if opinions aren't voice out aggressively, do you really want to see the exact same kinda of game mechanics appearing over and over, think about it, feel free to comment and rant about it
.