Well, "tactical" is "less than strategic", and the Tactical Cube is a lesser vessel than the standard Cube by dimensions at least...
The thing is, the Borg were visiting the Federation back in the first season of TNG already. It's not as if they would have needed to scout in that direction to find out that the UFP existed - scouting would be to see how this subject of careful and lengthy study was currently doing.
Essentially, if the Borg really are "hundreds of millennia" old, like Guinan and Q claim (but how should the first one know, and why should we trust the latter?), they would have been everywhere at least a thousand times already. Their agenda just doesn't include conquering the entire Milky Way, because where would they assimilate new ideas then? They pick and choose, and after they have chosen, they may discard. There were only two times the Borg were shown possessing a planet - in "Scorpion" where the 8472 destroyed such a planet, and in ST:FC where the Borg plan involved temporally/temporarily assimilating and keeping Earth. Probably the Collective simply has little use for planets, or territory. Heck, even the very existence of "Borg territory" in VOY may have been largely a misconception by our heroes, a brief concentration of Borg activity in a particular part of the galaxy before they moved on to other places.
Timo Saloniemi
The thing is, the Borg were visiting the Federation back in the first season of TNG already. It's not as if they would have needed to scout in that direction to find out that the UFP existed - scouting would be to see how this subject of careful and lengthy study was currently doing.
Essentially, if the Borg really are "hundreds of millennia" old, like Guinan and Q claim (but how should the first one know, and why should we trust the latter?), they would have been everywhere at least a thousand times already. Their agenda just doesn't include conquering the entire Milky Way, because where would they assimilate new ideas then? They pick and choose, and after they have chosen, they may discard. There were only two times the Borg were shown possessing a planet - in "Scorpion" where the 8472 destroyed such a planet, and in ST:FC where the Borg plan involved temporally/temporarily assimilating and keeping Earth. Probably the Collective simply has little use for planets, or territory. Heck, even the very existence of "Borg territory" in VOY may have been largely a misconception by our heroes, a brief concentration of Borg activity in a particular part of the galaxy before they moved on to other places.
Timo Saloniemi