I would like to say that the new version is more challenging in mid game than before which is probably a good thing. Before I could put my phone away for quite some time and had no issues now I have to always watch out what is coming and change items or towers accordingly.
But the plasma sword was quite op in mid game before and even more now as it does not fit in the scaling of the game.
When the plasma drops(if it drops) then I do not have to care about the game for quite some time because it is a huge damage boost at the time.
In the Long run it will be overshadowed by better choices but the mid game is quite different depending whether it drops and when it drops.