Think the questions you should be asking are:
Is it worth it now?
And
Will it be worth it?
Time will tell on the latter but if you have any thoughs on buying it now or in the future whats the difference in buying it now or then? If money is the issue then wait for a sale.
For me there are bugs for sure, but I have yet to have it crash on me. So I am happy to pay the money to support the development of the game I hope will be everything I want in the future. If not I still got some entertainment for the money I paid.