2.0 Is good.
2.05 Just makes you not want to play the game anymore, now I have to upgrade my planes again to Specialist.
It basically sets back my progress to grind other planes and move to higher tiers back by about 6 months.
I log into the game to have a bit of fun, not Work Full Time to Grind the same planes back to fully upgraded status, ie "Specialist"
Also in the past the Captain Skills used to have a synergy with your Modules you chose to put on your plane. Now, not really sure, if that is the case anymore.
It has the potential to make the already OP planes more Overpowered with the Specialist Upgrades, but not sure some Options for Upgrades suit certain planes if you like to play them differently than the norm.
Basically you only have the option to Specialise in a Linear Fashion that WG has chosen for a particular plane.
I was making progress towards T7 and T8 on most lines, but now forced to go back to T3-T4 to start specialising planes, lol. Seems like 3 Steps back to go 1 Giant Leap Forward.
Having the Calibration as a Gambling Option which costs you resources is also stupid to be honest. After players find out, that more often than not, you downgrade your plane using this option, not sure many will choose it.