Ofc you should have horizontal combostarters, and ofc there should be risk to movement. What's the deal with all the SC2 fanboys flooding the discussion all of a sudden?
I think Voldo is very much about his "reverse mixup" game (since his ordinary mixup game is on the weak side). That is, attacking from disadvantage using his many evasive moves. Moves like 4A and [1]B put him in very good situations on block, from where you can work your offensive defence.
Yeah, on paper Land Fish is pretty much ass (being unsafe and generally dealing low damage) but it's a low-mid, A/B mixup that leads into more mixups on hit, and LF B BE combos can net you ~70 dmg.
It's really just a 50/50 that you've got to weigh against the opponents ability to punish...
*May lead to. It's just the CE that tech traps any direction for full animation. Considering A+B3 (+another tech mixup) is guaranteed vs non-tech, and punishable if teched, I'd say it's a viable mixup.
Some "basic" tech traps into full CE:
66K, CE - all tech (might not be cost efficent)
CR AA, CE - all tech
A+B, CE - all tech (timing for right can be tricky)
CH 66[A+B], CR, CE - left/right tech (at least)
In general, a tiny delay might be needed, and catching to the right can be really...