I dont think they will fix the crash issue anytime soon or if they intent to at all. Its all come down to $$$, we all know how cheap and greedy Plarium is when $$ involved.
The crash is cause by "short-circuit" between server and clients(our devices), because Plarium handles most data traffic on their server side, maybe due to hack prevention or something, each and every action or spell/damage calculations are performed and carried out by the server only. When the server involved is "weak" or lack of capacity to handle mass data efficiently, it reaches the bottle-neck hence all kind of glitches occur then the server "senses" the data we send them is "corrupted"/unverifiable so they shut us down.
Server overhaul or even expanding servers is not likely to happen due to its cost, Plarium is already thinking about their exit strategy with all the $$$ they made why would they spend $$ on expensive hardware. just ride the wave while it last, things in game will be cheaper and cheaper, just be glad we can still play.