Hey that's a great reply, thanks so much. I'm in the optimistic camp too, if you read the press releases for the promotion with Versailles they talk of Totally Spies as a "French national institution" which is high praise. The French are precious about landmarks like Versailles so it shows the regard for the show to do a cross promotion.
The movie did well enough for another series and judging by the heavy rotation of the show, (on Tf1 at weekends and tfou 4 times per day in France alone) it's recent addition to Netflix & the Apple catalogue there does seem to be a continuing demand.
Stephane Berry posted a great picture of the spies earlier this year in support of Charlie Hebdo (not sure if you saw it but I can post).
Yes I thought season 6 wasn't quite as good as earlier seasons, for me the animation as well was a little off but still I really enjoyed it and left me wanting more.
So waiting is the name of the games....and enjoying the DVDs until S7 🙏🏻