Or perhaps significantly stronger. The UK was historically the naysayer of the EU, opposing more integration. Now the strongest Economies are Germany and France which are both very much in favor of a closer EU. If this leads to the EU being quicker in decision making and pooling more of their resources it could mean a big boon to the EU.

On the other hand the UK used to be kind of a watchdog of the EU so that role might have to be filled by either someone else or one can hope that the EU politicians will have enough pressure from their own countries.

Lastly even though the UK is in the process of leaving, basically all the politicians responsible for it have either back paddled or just quit. The UK might yet fall back into the fold, only this time without their special status.