Just out of curiosity, but how was this mod pack selected? I'm not complaining, but alot of the TG players seemed to hate the British soldiers on the Sunday Event especially the fact that the UK weapon sounds have serious issues (gun shots from 500 meters seeming as if they are right near you). I know UK Forces has had this problem on several of their addons in ArmA 1 such as the Jackal.
Personally I think that the UK soldiers are ok (aside from the bizarre menu name on the mission editor). IT's just the weapons that make them unusable aside from weapons not realistic to them (unless they are used for SAS missions using M4's).
My recommendation is to supplement them with the BW mod pack. I would say perhaps get permission from UKF to fix their weapons (I could easily do that if I get their non-binarized pack) but I know they would give us a resounding "NO WAY IN HELL" to that suggestion most likely.
A good alternative since we have so many Canadian players is the Operation Northstar release which is a nice complete pack that includes Canadian infantry, a Canadian weapons pack, a Leopard 2 A6M tank, and a Chinook helicopter.
There are also a couple of good Australian SAS packs that look good as well, but they're not complete mini-packs like the Canadian one above.
If you guys stick with the UK guys and we just get used to having the sound of their weapons loud all the time (or the guy who ported the UKF weapons fixes the sound), then a lot of people are asking for the Challenger 2 tank pack to be included which is here:
One small addon that would greatly improve things and that works in MP, is the fastrope addon that enables this for all BI aircraft to include the osprey:
Yes I know the new MH-60 addon in the TG pack has this, but it would be nice to have this on the USMC aircraft as well.
Another possible boost to the USMC would be the LCAC which is only a 1mb file:
Finally many are requesting new OPFOR addons. There aren't very many, but there is FANTASTIC LOOKING addon that we MUST HAVE!!!! This is Gnat's Russian Kiev class aircraft carrier conversion here:
That would VERY VERY useful for Russkie missions or the opposite of our Khe Sahn mission where instead US commandos storm the Russian carrier.
For new Russian infantry (small 4mb file) there is the Russian OMON pack:
For Russian airborne operations (since the West has a C130) there is this the new AN-2 addon:
There is also a T90/80/72 pack, but since we already have BI T72 and T90 in-game that's not a big deal.
Anyways those are just some suggestions.
Oh...I do have one more possible suggestion. I am working on porting my mod's stuff to ArmA 2. I may be able to develop a small infantry/armor/helicopter pack in short order. But I guess since we don't have any good desert or Mediterranean style maps (like the Avgani map with those lovely deserts and wheat fields), then I guess that is not a great suggestion although it would be tons of fun in MP assaulting objectives with Merkava Mk4's filled with a fireteam of 4 men in back of each with Heavy Achzarit APC's charging in back of them.