Of course what you say (improving aikido) is possible. But knowing the hows and whys of the current state of aikido can help the next generation (or even the current one) to avoid falling in the same traps for those who don't know history are destined to repeat it.
My experience is that even those who know history are destined to repeat it ... blithely claiming "it's different this time" as they march to their doom.
IIRC, a certain amount of the fragmentation of aikido after Ueshiba Sensei's death can be blamed on several different people being absolutely convinced that only they understood "real aikido." So maybe we're busily repeating that mistake even now.
Nah, can't be. It's different this time.
Or is it?