The VS was a mistake because;
a) It clearly didn’t fit with the background and fluff.
b) The Eldar did not need it to be competitive.
c) It’s inclusion altered the balance of the Eldar fleet giving it an unwarranted advantage over some other (but not all) fleets.
d) It removed one of the things that made the Eldar “different†from other fleets.
The most effective way to correct the mistake would, of course, be to remove the VS, but that would be hard on those who have paid out good money for the model so it won’t happen.
However, changing other fleets to give them a BB where, it doesn’t fit with the background and fluff, that don’t need it to be competitive, that would alter the balance of the fleet and would make that fleet less different is clearly not the way to go.
If you want to have everything the same as your opponent play chess.