Yeah, I noticed the follow-while-cloaked thing as well.. at zero singularity and 14km~ out.(It is kind of breathtaking seeing those dreadnoughts fire off evasive maneuvers and quickly position themselves on your flanks for their charge-up attack.)
I already made some proposals for the showdown as part of my testing log for it in the related feedback thread. Long story short:
Wave before last - 2x Dreads, a half dozen escorts and frigates(each).
Final Wave - 1x Command ship, a half dozen battleships and a dozen frigates.