Ren-C has knocked this one down too!
Thanks to the fact that isotopes cannot be stored in BLOCK!, you never get isotopic ACTION! from a pick out of a block.
You can only get plain actions out of a block. To run them, you'd have to say something like run block.1.
The key being you can still put the actions in blocks, you just have to remove their isotopic status, making them plain actions (or quasiforms if you want to convey they are supposed to generate isotopes back vs. be executed if encountered by the evaluation of that block).
I will admit that managing the difference between isotopic and plain actions has driven the need for new mechanisms that can be a bit daunting. But even in the early days of those methods, the advantage of terra firma of block mechanics outweighs the difficulty.