I am 100% against splitting fleet and personal skills into different tracks/pools. It chops off the builds at both ends of the scale of pilot to admiral while adding nothing.
The fallacy that many new players fall into is that because personal skills only boost 1 ship while fleet skills boost all of them, the fleet skills are way better. This depends completely on the player's pilot skill and the ship they are using, so for them it may even be true! But as players get more experienced, they become better pilots and start using more powerful "playerships" for themselves. Those combat skills go up in value massively, to the point where only the very best fleet skills compete.
As things stand, players can win with pure combat builds, pure admiral builds, and everything in between, which is way way better than a system which forces an even split.