Scenario:
Are there any rules for a point ratio between attacker and defender? I.e. same amount of points, defender gets an advantage, attacker gets an advantage?
Does spotting a defending unit take away points from the follow-up battle? (i.e. by spotting a defending Centurion, that means the Centurion's points are not available for the battle later) This encourages the attacker to try and spot as many defending Mechs as possible.
If the attacker can clear the board of defenders, that leaves a flank open. If the defenders can put enough Mechs on the map the attacker cannot succeed, but each Mech deployed is one less that can take part in the main battle.
The attacker is sending in a scout force, so have a rule where the only units from the scout force that can participate in the next day's battle are those with at least 5/8 speed at the end of the fight (ignoring speed loss due to heat). If a unit is not fast enough (due to design or battle damage), it will not be able to get to the next-day's battle in time. I.e. you could send a force of 3/5 Assaults as a reconnaissance-in-force, but that also would mean those assaults are not in the right place to take part in the main battle (where they will be needed).
Defender:
Put up minefields so the attacker is forced to blunder into them. Can the defender have a few pre-plotted artillery hexes?
Attacker:
Have each scout with at least one long-ranged energy weapon, so as soon as one defender is spotted as many attackers as possible can fire upon it. Have couple units with Beagle Probes to better scan hexes.