I guess mostly because all TMP ships had their sensors placed in the undersaucer dome, what's more they never thought about such advanced features back in 1970.
In this ship I can't really see suitable place for aeroshuttle or cpt. yacht as the dome serves as sensor dome like in TMP and in Cortez war refit it will be also rapid firing turret.
Just for an update, scripting is done, the ship is ingame and working properly, i'm now awaiting for model and improving HP ATM (there will be small surprise in it).
Some technicall details on Sobieski class :
Constitution class mark 4 refit - Sobieski subclass - deep space explorer
4x Saucer main heavy Type XIII phaser arrays, burst fire mode.
4x Secondary hull medium Type XIII phaser arrays, burst fire mode.
3x Quantum torpedo launchers 1x aft, 2x forward - each has reloads in 30 secs and can fire up to 2 torpedos per tube
Medium strenght Shield generator
Light hull platings
Ablative armor
Maximum warp speed - 9.85, optimal cruise speed - 7,5
Shuttle bay stores :
2x Type-11 shuttles
2x Type-9 shuttles
2x Type-6 shuttles
1x Venture scout shuttle
and technicals for Cortez :
Constitution class mark 4 war refit - Cortez subclass - Fire Support Cruiser
6x Saucer main heavy Type XIII phaser arrays, burst fire mode.
6x Secondary hull heavy Type XIII phaser arrays, burst fire mode.
12x light pulse phaser arrays - 6x starboard, 6x port - single fire / broadside salvo mode
5x Quantum torpedo launchers 3x aft, 2x forward - each has reloads in 30 secs and can fire up to 2 torpedos per tube, 1x rapid fire Advanced Quantum mk1 torpedo turret - can fire up to 4 torpedos
Heavy shield generator
heavy hull platings
Ablative armor
Maximum warp speed - 9.85, optimal cruise speed - 7,5
Shuttle bay stores :
3x Type-11 shuttles
4x Javelin / Peregrin fighters
1x Venture scout shuttle