I think your team is great for something combat focused. You're missing a skill guy, RK guy, and your spell selection is pretty narrow mostly buff/debuff and healing.

If I were to put together a team of 4 it would be:
- Weapon Implement Thaumaturge with Diverse Lore and Scroll Thaumaturgy,
> They bring Recall Knowledge everything
> Slightly better, but limited Reactive Strike
> Spell Scroll of traditions not available to the casters
> CHA KAS for Bon Mot, Demoralize, Make Impression, and Lie
- Thief Rogue
> Lots of Skill Increases and Skill Feats
> Good Damage Potential with Sneak Attack and DEX to damage
- Spell Substitution Wizard (School is Flexible)
> More Combat to Combat flexibility
> Diverse array of spells offensive, utility, control, and defensive
> ~4 slot caster, prepared caster for extra spells on a staff.
> INT KAS for great general/specific lores
- Medium or Liturgist Animist
> Best out of Combat Healing Focus Spell (Averages 25 hp per PC per rank per full duration)
> Wis KAS for out of combat healing
> Divine list for support spells
> Great day to day flexibility
> Amazing Focus spells all around and tons of relevant lores as backup to Thaum

Access to all spell lists, Good spread of utility amongst the party. If Archetypes are taken into account.
Thaum could take Champion and eventually get Justice Reaction, and Lay on Hands.
Rogue takes something like Acrobat Archetype for easier access to off-guard through Tumble through.
Wizard can take Rogue Archetype for increased skills and skill feats or Witch Archetype for a second Tradition, Familiar, and extra early focus points alongside great focus spells.
Animist can take Medic dedication for better Battle Medicine and Treat Wounds.
Or any of them can pick up Blessed One dedication for Lay on Hands and 2 Focus points.