Unless of course, you want to be slow. Against another DS army list or against drop pods, you could use this to bring in some cheap unit and make sure you don't get your other reserves, hopefully until after the drop pods arrive.
Exactly what I was thinking as I was reading OB's post FE.
The Positional Relay piece of wargear sounds like a good piece of wargear in that you have really good odds of bringing one unit in when you want it and delaying your other units to help the come in together.
I'd been thinking of this last night or so. We could use the Positional Relay to drop in some Gundrones, or a Sun Forge Monat etc., perhaps even with Marker Beacon LOS to pinpoint it. Is the Marker Beacon "move and shoot"? Can the PF DF zip 12 and still use it? Sorry, new codex free zone here...
Next turn, your DS units are all 4+ right?
Infliltrators- Pillboxes not needed is a good point and we'd probably be better of with mobile, harder hitting infiltrators like Stealth Suits to block the enemy's infiltrators.