Been reading too much OOTS recently i guess
Still, my idea for a versatile combat & general support bard, assuming a 32 point build with +3 tomes available:
starting stats 15/14/14/14/8/14, level-ups in STR to qualify for OC.
half elf, paladin dilly
Toughness, empower healing, 2wf, i2wf, g2wf, dodge (stalwart prereq), PA, cleave, IC slashing, quicken, extend, g.cleave, overwhelming criticals (those last 2 as epic feats)
PrEs virtuoso 2 & stalwart defender 1
can't take warchanter with this as a 2wf build since no space for weapon focus, hence virtuoso instead, for some reliable CC & heal over time song... empower healing would let me boost rejuvenation cocoon, which is a "must have" twist for me extend for longer displacements & haste to reduce need to renew mid-fight. Primary destiny would most likely be fatesinger, though primal avatar has some tasty bonuses too.
could go with a 2hander build, then ditching a couple of the weapon style feats would have space for something else, eg. weapon focus to go warchanter instead.
I know it wouldn't be the most amazing of builds for soloing etc, but it seems like it could be a pretty solid performer in a party.