One of the main problems with Lost Temple is that it doesn't have any of the unique guns STTT supports. The only way to get anything other than an M16, Shotgun, or MAC10 is to buy it from the pointshop. Not everyone knows how/wants to do this, and it gives VIPs an advantage as they get access to guns more powerful for different situations, as they are the only ones with AKs, P90s, Double Barrels, and so-on. Providing more ammo/gun spawns with updated guns would at least balance the map out a bit more. Edit + Title Edit: There are other maps that need rearming as well, such as: WhiteHouse Bank Amsterville Canyon
It doesn't necesarrily need M9K weapons, it just needs more weapons in general. I've had to scavenge that maze of a map just for a pistol too many times to count.
The map could use more guns in general, but theres no reason to exclude M9K weapons from being picked up on a map while others spawn with/buy them, considering 80% of the guns in STTT are M9K.