As ever - try playing the longest season in world rugby, win (or lose the final of) the major trophy; then cross 11 time zones and be ready to play that weekend.
We suspect that 1 player from T14 won't be ready for the Lions this weekend; France would have half the team.
The solution is that if a SH team invites the French over for a summer tour - accept when their season ends, and delay the tour dates by a week.
Which pushes things into the QN, so isn't viable. In which case, either accept a weakened French team, or invite for a shorter tour.
It's only been 133 years
The French love the T14 and the Brennus shield.
They've already sacrificed 2 teams to accommodate cross-border competitions. I don't see them sacrificing more to please the SANZAAR nations