First of all, when uprising had come out, i've decided to skill into this dropsuit, because i compared the bonus and i thought that gal logi bonus was the best to play as a logi.

We, armor tankers, had a awful time when the flaylock and mass drivers where FOTM.
Then they adjusted hit detection and the armor plates.

Now certain fittings with logi GK.0 are really OP (like the logi CK.0, not a long time before), but if you fit proto/adv equipments on your suit, the gk0 is not so unbalanced, is more or less in line with other medium frame proto dropsuits.
Clearly you will have a great advantage on better equipments because of your bonus.

So, before nerfing it in some strange ways, consider that, people who use it to play assault class will still use it to play assault class because of the high number of slot.

In other words CCP, please find a way to nerf the suit without hurting the logi aspect of it.

Yes, but like you have shown in your video, you do not play for the team, even if killing so many people is an advantage for your team, you use the hives for yourself, you use the scanner for yourself.
If you have to run across the map (open included) and not standing in 1 or 2 hot spots, you can't tank with 5 armor plates and without reppers.
A couple of flux the hives are gone, then what will you do?
The scr is another thing on the nerf list, i don't expect that it will have a long life in cqc engagements, then what will you do?

In your video you were playing like an heavy should do, with a little less HP than an heavy, substantially: point defense