I stopped playing in June, so some of this could be out of date, but there are some simple and (i think) easy-to-implement improvements that would have gone a HUGE way to bettering the multiplayer experience in ETW.
Here they are:
Centralized Server
- no split community
- global chat
- global player list and games list
Ranking Systems
- An actual ladder of some kind. I mean come on
- A 1v1 automatch only ladder, for those who don't want to deal with point muggers who play on particular maps, choose particular armies, and impose particular rules.
- Ranked games should count as a loss if you disconnect
- An explanation of how the point system works
Fight Camping, or at least formalize it
- set attacker and defender
- place favorable terrain in between deployment zones rather than in them
- king of the hill or strategic points game types
- mortars (hint hint)
Support Competitive Gamers
- Built in clan system. Age of Emipires 3 had this and it was awesome.
- Clan Rankings
- Official Tournaments (with steam achievements would be cool)
- Tool for custom tournaments
- include flat maps
- log files so we can tell if someone is cheating
- a replay system that's saves replays automatically, and is easier to use
- please make it easier to create and install mod maps
Balancing
- in M2TW, buying more than 4 units of the same type made them more expensive. In ETW, this could apply to all units other than line infantry.
- common sense: dragoons were worse than light dragoons in every conceivable way, and yet still cost more. And mortars were clearly overpowered.
- my opinion is that the mainstay of any western army should be line infantry, so make them really cheap, but tactically limited without support from other unit types.
- options for the host to restrict certain factions or units in a game could also help.
- Unit stats and costs in multiplayer should probably differ from those in the campaign.
- balanced factions, with similar numbers of unique units.
Well that's it from me. The TW series has been a fantastic one, and looks like it will continue to be. I hope NTW multiplayer will learn from ETW's mistakes.