For me personally here's my breakdown on pure melee bards:
28-32 point build: THF
34+ point builds: TWF if taking the melee feats, THF if skipping the THF line for other feats
My 32-point pure warchanter right now took PA, Toughness, THF line, WF: Slashing, and Extend (using Min2 only - would drop if I got a better weapon). A spellsinger version could easily swap in Maximize for WF: Slashing to the same build. A virtuoso could have their cake and eat it too, taking Extend and iCrit both (though they wouldn't have Maximize then). And of course a human gets the best of both worlds as well.
All that said, if I were to go Spellsinger I'd want to be able to make maximum use of that sp pool for healing purposes. For me that would mean Maximize and Empower both at the very least. I'd also want Extend. So you're looking at PA, Toughness, iCrit, Maximize, Empower, Extend with one free feat. I actually took Empower Healing too. I wanted to be able to solo heal a 1 round shroud reliably and having all 3 meta's for boosting heals made a big difference there. What I didn't like when I had that build though was that I felt like I was supposed to be twitching as a THF that doesn't twitch and doesn't have the THF feats is performing sub-par compared to what they could be doing. I'm enjoying the toon a lot more now that I dumped the healing other than scrolls and focused on the melee damage.
I actually considered going TWF on that same toon but I don't feel it has enough skill points to work well on a 32-point build. 36 pointer w/ +3 tomes though...yeah, that would fit in easily. If I were going to do that I'd be looking at a human, doing PA, Toughness, iCrit, TWF line, Maximize, and Empower. I'd bite the bullet on giving up Extend to max out those mass cure spells though I could understand someone going Maximize/Extend. In fact, if we ran more 6-man epics I'd go with Extend to make displacements last longer. If I'm mainly shrouding/ToD/VoD where you'll be using clouds instead then I'd go Max/Emp. If you wanted to sell out a bit for dps you could even go Maximize/Khopesh.