The Resurrect spell certainly has its drawbacks. Firstly, Tiolas might be taken out first (although he has flight and can cast spells, it's not a 100% guarantee). Secondly, melee units that have moved forward to tank won't be able to be resurrected with this setup.
2) The squad might be scattered
3) It won't help melee units
4) For most of the time, it just sits there and does nothing
5) It might activate in situations that could easily be avoided by successfully casting "Haste"
But we need to decide something already. I'm leaning more towards "Haste." Kosh is leaning towards "Earth Power." You're neutral. The deciding vote goes to Neyra.
Added 47 minutes later
Let's go to the lake then. If you want to use Tiolas, you can.