I actually find the level cap to be enjoyable. To be honest, I never had a problem with over-leveling my pokemon (mainly because I'm always under-leveled in everything haha) and I battle every trainer I possibly could. It ramps up the difficulty in the game at the same time make Reborn a unique game on its own. However, the main reason why Reborn is difficult is not because of the level cap, but the strategy and field effects makes towards fighting a gym. The gym leaders use a type of strategy that are unique to their own type and they mostly follow the same level cap limits as the players. They aren't 10-20 levels over the limit unlike most Pokemon-hacks that tend to do for "difficulty." To put it simply, Reborn is "fair."
Any-hoozies, the people talking about increasing price on common candies, I disagree. The increase of price limits the play-style for players; different people have different strokes--just sayin'.