The map changes are awesome and obviously working out new item builds will be exciting, but I think that those two additions mentioned in the title are certainly overkill.
Already being able to share blue or red with one other team member is absolutely fine and for example, to give every player who is alive a blue buff does not sound balanced at all. You don’t have to be a rocket scientist to take few seconds of thinking that this is just abnormal.
In general, I would not like to see Rift Herlad drifts by a player on the map. It sounds like a funny addition, maybe there could be some tactics involved for certain champions, but to me, it seems the devs are just reaching for any ideas to keep the game as fresh as possible when already so many new additional changes have been implemented. Like, what is the point of a Herlad drift when the sole purpose of it is to break objectives, why should the player control it now just to increase some new game dynamics with knock ups? (Btw, this Herald drift was already in a temporary game mode, they just added this now to the Rift)
As we know, when Riot experimented with the invisible terrain, it didn’t go too well, although the idea seemed fresh and exciting. These two changes should be definitely reviewed, and removing them would not harm any of the so far fairly well perceived changes. A bit less is far better than a bit too much!