I've held off from responding to this thread to get a better feel on weather. After playing more games I believe there are numerous issues with the new weather. No, it's not game breaking, overpowered, etc. However, it is arguably poorly designed. In terms of specifics...
RNR and Drought may seem fine when considering FL and faction specific cards with CS. The trouble is the cards are frequently 9 points even in those cases. Row stacking can reduce it to 3 but it's not always possible or ideal, and it creates a vulnerability to other weather types/cards. Furthermore, clearing it isn't realistic if it's applied at the right time, after the counter cards are used up. In any case these cards do seem a bit out of hand.
This raises the second concern... Weather triggering the turn it is applied feels questionable. In CB if you were hit with weather you could directly counter it with a CS. It was a card for a card. In OB you lose a rally or an ability to clear weather and still take damage. This doesn't seem like a fair trade.
Another concern is the huge influx of the agile trait, which is presumably a result of the weather design. I do not feel agile being everywhere is good design for a number of reasons. It puts certain cards in a position where it's almost a given you will not be able to maximize their value. It also undermines an advantage that was previously unique to certain deck builds/factions, and grants it where it probably shouldn't be in some cases.
Forcing decks to bulk up on weather clearing is also bad design, for obvious reasons.
The final concern is one-sided weather removes much of the strategy involved in the usage of it. There is no thought of hitting your own units. Preemptive placement has very little penalty. Spamming a board has no drawbacks. Expanding on this, weather types lost their unique placement characteristics. Frost can go anywhere, as opposed to the melee row only (this contributes to the board spam the most IMO).
Bottom line... The new weather makes the game feel more restrictive, dumbed down and, at times, downright irritating. I don't see that as a good direction to move toward.