thats what I thought recently too.
it would be like 4 x-men movies to date, being X5 the 2014 movie
could you imagine? 5 movies with the original cast?
Gambit and Nightcrawler would have been included on X4 probably...
anyway, lets not think about that anymore, lol
this First class series has much potential too, although we need more time to make the team bigger and better, so we'll only have to wait more years for a big team like X3. It will be worthy
Next Big X-Men Crossover
* 2017- X-Men: Age of Apocalypse
Edit: Forget about 2017:
Official announcement -> X-MEN: APOCALYPSE - MAY 27, 2016!!!!