Im not advocating for changing bitcoin, just pointing out that satoshi left, bitcoin has changed and the people using and developing it now are who matter. 

Re: op_cat. I think the great script restoration makes sense and a lot of smart people are interested in op_cat. It's definitely beyond me, but if enough devs think its a good idea then lets see what happens. 

However, i dont think everything that can be done with bitcoin as it is today has been explored and that should happen before it's changed