I am proud of Gail. Her hard work and dedication led to the creation of a women's division and a women's title. Her feud with Awesome Kong earned the title belt and the division a whole lot of credibility. It's great that she left TNA on good terms and will likely return to WWE and earn a nice amount of money, which should help her become financially secure once her wrestling days are over. I'd prefer to see her on RAW as Gail's said a few times that she'd like to wrestle Beth again - they fought each other years ago.
Gail is 32 years old and the shelf life of a female competitor in North America doesn't last forever. Going where the money is while your stock is as high as it's ever been is a very wise decision. The Knockouts Division will take a hit and it will be hard to fill Gail's shoes, but they still have a few solid and sound wrestlers capable of putting on great matches.
One door closes and another one opens and a brand new adventure begins. Thank you, Gail, for the TNA memories and may you continue to realize all your dreams and goals.