I fail to understand how KDF cruisers are better than excelsiors and gal-x in term of burst and damage capabilities. And even if it was true, now compare the raptor and garumba with fed escorts and you will see a much greater hole in favor to feds.
And what's your definition of game balance? If you are talking about competitive pvp, then the ody will be better than the sluggish borta because you want a cruiser or nebula / d'kyr for healing and escorts for dps.
People wanted the ody to be a weapon plateform and it is why they are so upset about its configuration.
IMO give it the same config as the borta so people will be happy and then it wont make healer ships obsolete.
And for science consoles...
They may be useless for people that don't know what to do with them, but they are awesome for some builds like my tactical bop so it is not a generality.
But I agree they can add some new interresting science consoles.