Depends what Pompey does.
Assuming Crassus still gets himself killed at Carrhae, Pompey is the only one left standing. No doubt he will want to avenge the setbacks to Roman arms, but he can't march both ways at once. Most probably he will go east rather than west, as he is more familiar with it and there's more loot in that direction. That is apt to keep him occupied for a very long time, so he won't be doing anything in Gaul any time soon - if ever.
So you could end up with a limes in the west a lot closer to the Med. No doubt some tidying up will get done in places like the Balkans, Alps and NW Spain, but Gaul may never be conquered, or if it is, it may well be a later conquest, taken sometime in the 2C by some alt-Trajan. In the latter case, it could well be lost again in the 3C as Dacia was OTL. With these borders, Rome's chances of surviving the 3C crisis are considerably poorer.