Ive been working on this melee grenadier idea for a little while now, but I recently found the dervish dance feat, and am really digging this option. We are starting at level 2, so my current start is as follows
15 point buy stats, tiefling mods already included: 10/17/14/17/10/5
traits: reactionary, fast drinker, and firebug (three do to drawback rules)
starting feat is obviously weapon finesse, as I need dervish dance at level 3.
Still deciding on my level 2 discovery, leaning towards an alternate bomb type or spontaneous healing. Possibly infusion, but not a current priority. Would love to hear some other cool options.