Honestly, this is way too easy.
The only thing that prevents me from popping them faster is because all they have is higher hull points...
*Give them the same Boff layout as their playable counter point.
*Make them starting off as hard as cure space elite.
*encourage teamwork between players

Well some people might ask how will yall teach people to work together and actually learn to optimize not only your ship, but your career choice, and ground game??

Two words...
Starfleet Academy...

Agreed

The Borg should be more aggressive , they
Should attack all 5 members of the group
Especially those doing the most damage to them.

They should use more abilities like gravity well
Shockwaves warp plasma photonics fleets. Sensor scan
Just to name a few.

Space should be as hard as ground and take as much time
To complete right now space stfs are way too easy.