I am not that thrilled by this guide.
First of all the slotting... The slotting suggestions for many powers are far from max efficiency even without looking at HOs and IOs (and 3-slotting for acc is only one point). I think it would be best to ignore the slotting suggestions altogether.
Concerning primary powers I would only object against the AoE immob since earth/ is not one of those sets that profit much from something like that, especially since it has this combination of Quicksand and Earthquake.
But now for the real problem: the part about kinetics.
Siphon Speed - How comes that the single most important part of this power is so often negected? It's nothing to use instead of or additional to SS, it's something you want to use every time it's up and stack it as many times as possible. Who doesn't love +20% recharge per buff? Together with Hasten this enables you to spam your best powers (and burn your endurance fast). And because you want to stack it anyway taking Hover is a good idea. Hover at the fly speed cap is probably the best combat maneuvarbility one can have.
Siphon Power - Instead of taking Fly and SS as travel powers you might probably want to keep this power for the late game. It's not only a buff, but also a debuff and -20% damage against a heavy-hitting opponent is nothing to sniff at.
And finally... Speed Boost - The OP says scrappers will bow to you. Don't believe it. In fact scrappers will be the first to reject it, because they have a tight attack chain anyway and the additional speed makes some of them (those with clumsy fingers or slow machines) overshoot their targets. Most others will love it, though. And please, don't just SB one or two team members but everybody who wants it. Use Numpad-keybinds if you like, but please do make it one of your primary objectives to keep everyone SBed. Few things are more annoying than a lackluster SB-buffer.
