Collectible Card Game Headquarters

Describe the Bug:
Quirion Dryad does not receive a counter when you cast an appropriate spell and the spell is then countered.

Just casting the spell should trigger the +1/+1 counter effect regardless of if it resolves. In the attached replay, cast a Sublime Archangel and the AI will Rewind it.

Similar to the current Talrand, Sky Summoner bug:
http://www.slightlymagic.net/forum/viewtopic.php?f=86&t=12533

Which card did behave improperly ?
Quirion Dryad

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
PtTv1

What exactly should be the correct behavior/interaction ?
Just casting the spell should trigger the +1/+1 counter effect regardless of if it resolves.

Are any other cards possibly affected by this bug ?
There could potentially be a lot of cards that do not get this interaction correct.

For example Belligerent Hatchling also gets it wrong, so potentially so will: Blistercoil Weird, Battlegate Mimic, Balefire Liege, Deathbringer Liege, Emberstrike Duo, Gelectrode ... just to name a few quickly.

I can see a couple approaches to this, and I'm not sure which is better.

1. Just add the counter/do whatever other effect during EVENT_CAST_SPELL, since that gets sent to all cards. It won't be an actual trigger anymore, so won't be orderable. And we'll have to change them all back anyway if we ever get around to #2.
2. Take the plunge and do away with interrupts. Hack the current interrupts (most notably counterspells) to target the next card down on the stack for now and see how poorly the AI deals with it.
3. Move TRIGGER_SPELL_CAST so it's sent at the beginning of the interrupt window instead of the end. Probably the easiest overall, but no idea what else that'll break. Depends whether there are any cards worded similarly to "Whenever someone successfully casts a spell, do such-and-such", and how many cards trigger on TRIGGER_SPELL_CAST for wording that isn't "Whenever someone casts a spell".
4. Figure out how feasible it is to add new triggers.
5. Shrug, say "cuzza MANALINK!", and go work on something more interesting.

I'll go for 3. For what I know, all the current card are worded "Whenever X cast an X spell". The "successfully cast" wording is obsolete, I run a query on magiccards.info and it seems all the rules text were been updated to the new approach.

If the current trigger's moved, we'll need a new event to deal with all the hacks that set flags on spells as they're cast.