Fire, ice or hybrid are all really nice. Depend of ur teammate, depend of ur opposite team. Fire tb is a pain for speed and instant damage, ice is a pain for the cooldown, slow speed and 2x interrupt and hybrid have 50% of each side benefice.
That's my point. Hybrid isnt 50%.
The build I use still gives Deep Freeze, Frost Nova, RoI and Fireball. You get PLENTY of burst (see my other post) and you get every control spell that ice has.
The only thing you miss out on is lvl II of Frost Nova before 16 and Auras. Auras are nice but active abilities will mean a lot more.
Ice misses out on Fireball which is the bread n' butter spell for TB. Thats your whittle spell.
Fire misses out on an interrupt (wtf, why would you not get at least 1 point in it?), the only stun that effects buildings, and a ranged version of Fire Nova that (at most points) costs less mana.
(My)Hybrid misses out on CoF, Fire Nova (Crappy point blank RoI), and Auras.
The auras are the only ones I hate that I miss out on, but again, activatable abilities are more fun the passive %s. The dmg from the fire aura isn't very helpful and the mana regen on Ice doesnt help much due to BotS. The slow/speed is very nice though.