Ah, beautiful! 2800 gives you the flexibility to add everything I'd wanted in the previous iteration of the list.
There's only one thing missing- one of those glade guard units
needs the flaming banner. Against things common to tournaments (hydras and hell pit abominations, for starters) that will be pure gold for you. If you cause a wound, it will knock regeneration off of the unit for the entire phase, allowing you to shoot it freely with other units as well (and wipe it off the board!). Otherwise, those said units would be a huge problem for you.
You can get this by mixing up your core just a bit (you have 20 points extra over the required amount)
or taking the brooch from the spellsinger (depending on what it costs, no rulebook handy
atm).
An easy way to get it would be to drop a glade guard from the unit you plan to put the spellsinger in- but then, it's nice to have flexibility on where you will put her. Still, that's a good option for getting the points for it.
But you Need it!! Other than that, I am in love with your list

whether you decide to go for it or not.