For the 1st season of a new regulation, having a long pause at this moment is not bad even if it can be quite boring for fans.

It allows teams to work on the car, especially when they were late like Hyundai, and to work a little more quietly on specific issues such as the hybrid problems seen in Sweden.
I think that, if it is used properly by FIA and teams, it will help to improve the level on the long-term (better than being always in short-term workarounds to have short-term improvements).

But definitely yes, it is only valuable for this season, not the next ones. A return in Mexico would be good.