at the end of the day it all comes down to being locked away and trying to get the most kills possible using all the benefits of the SL and not wanting anyone else involved in your game unless they're pawns in other squads
As I said before I can say that Everyone in my APC squad on a round of Al basrah said it was the best round they had ever had
In fact iirc you were the commander for that round weren't you Rudd? I had 6 men in an apc squad, a driver and a gunner and 4 (including me) foot soldiers. Thanks to Rudd we had a well commanded infrastructure so rally points were unneccessary, we'd spawn at FBs more often than a rally (which I could never be bothered to set as I despise rallys)
4 soldiers available for
Instant insertion for immediate support anywhere, whereas being a seperate squad takes communicating picking up and so forth
And we had the benefit of whenever picking up a squad the apc would drop us at their drop point on his way, we'd secure their drop point, APC would go get the squad and bring them in to us and they'd have instant support on arrival
Also when we needed to extract/support a squad in the city the 4 infatry were pathfinders along the streets searching for the bugger holding an RPG whilest the APC would move up behind towards the squad under fire needing extraction
In fact I'll expressed my feelings on how unlocked squads are better than locked ones (any day) in song