Only in the short term. In the long run its more than worth it because: - It will be impossible to hire good AS3 experts. You will need to pay mountains of mon

Only in the short term. In the long run its more than worth it because: - It will be impossible to hire good AS3 experts. You will need to pay mountains of money to train juniors or hire the remaining experts. Programmers will always want to try the new shiny thing, which they cant adding more HR problems. - Now they will need to maintain the AS3 -> new tech compiler too. New tech evolves constantly breaking your compiler. - Current tooling will show its age quickly. The official IDE for Flash is an outdated Eclipse plugin that wont work without patches. JetBrains has an excellent plugin, but its in maintenance mode who knows when they drop it. Also profilers, debuggers,... If you don't fight the tech dept you will end up like banks where it takes a day to make a simple money transfer because everything core is running on mainframes in COBOL.