Yoshi Tatsu posted a recent blog entry in Japanese in which he expresses his frustration with WWE. Tatsu notes that he's frustrated with his lack of upward mobility and that he came to WWE to grow as a wrestler, but has been held back. The blog also discusses how he asked to be on last year's RAW tour to Japan to aid in earthquake relief, but he was turned down because he's part of the Smackdown brand. Yoshi also said that he was not allowed to appear on the "All Together" shows in Japan that raised funds for earthquake relief. He notes in the blog that he doesn't want to be critical of WWE or his time with the company, but he needed to discuss his feelings. Source EWN
A lot of the smaller wrestlers are held back because the fans and the management want bigger and 'better'.