Am I the only one fed up with all these tanks restricted to CW/ supertesters/...

Ectar:   The KV 220 was never available previously to EU players, hence why it's available to purchase on the EU server. The pre-order tanks (A-32,  Pz V/VI or M6A2E1) were never available previously to RU players, hence why they are available to purchase on the RU server. This was done because we didn't want a situation where 1 region had exclusivity over another region regarding certain vehicles.  - Whist the BTSV package was only sold in RU, players from EU could still purchase it and use the code on an EU account (code for these packages were not region locked).  It's possible the BTSV may be used again in a future retail package but it's unlikely to ever come to the in-game store/premium store. In that respect the Pz IV Hydro is unlikely to ever come to the in-game store/premium store as it's a retail tank) *retail tank means it's intended to be included in cross promotion with another item/product to make the package more desirable* - think of it like a games console only be available in a certain colour if you buy it with a specific game.  

Ectar:   1- They're not 2- Your understanding/information of server roaming is seriously wrong. Roaming allows you to play on another server just like switching from EU1 to EU2.  There has never been any plans to allow players to advantage of another region's weekend specials or premium shop offers. It's actually been stated by our Devs directly when this question has cropped up. All you do is switch gaming servers. You don't transfer your account into the other region's database and then have access to that region's services like you're a normal RU player.    Now lets check the tank list and compare it to what you can buy on the RU server premium store   T1E6 T7 Combat Car T23E3 M60 M6A2E1 Light Mk. VIC Pz.Kpfw. 38H 735 (f) Pz.Kpfw. II Ausf. J Pz.Kpfw. V/IV Pz.Kpfw. V/IV Alpha Pz.Kpfw. B2 740 (f) VK 72.01 (K) 105 leFH18B2 Tetrarch  BT-SV  LTP  M3 Light A-32 T-44-122 KV-220 KV-220 Beta-Test KV-5 Type 62 Type 59 Type 97 Te-Ke Type 98 Ke-Ni Otsu   I appreciate you may feel things are unfair but when you make a statement that straight up isn't true and anyone who will put the time into checking can see this for themselves, it's rather frustrating.  

Ectar:   This is exactly how people starting making false claims and jumping on bandwagons. Barely any of those vehicles are available on the RU server.   Tanks that occasionally come up on both servers for premium shop offers -    Pz.Kpfw. 38H 735 (f)
Pz.Kpfw. B2 740 (f)
105 leFH18B2
Tetrarch 
M3 Light
KV-220
KV-5   The difference between what's available now across all regions is actually pretty slim. As to what was available in the past and for limited times that's different and for different reasons explained already. Some tanks are reserved for retail packages in order to specifically make the retail package more attractive (Pz IV Hydro for example).  The BTSV and Pz IIJ have never been available in any in-game store/premium store in any region. (Not counting the China region here which WG doesn't admin). Multiple Pz IIJ codes were given to players in EU for attending events like Gamescom 2012 or Dreamhack 2013. They're not intended to be for everyone as it's a special gift for attending the event and the codes were specifically created in limited numbers.  If you wanted to buy the BTSV at the time it was available in that package there was forum post and fan websites posts everywhere detailing how to get it and multiple EU players too advantage of that offer.   Some vehicles will always be reserved for specific events or time periods. Expecting that you can just throw down some money to take advantage of an offer that's expired is a very unrealistic expectation. It's intentional that not everything can simply be bought as it trivializes the uniqueness of being at that event/winning that contest/meeting that specific in-game requirement. Saying things like "Well you obviously don't want my money" is a crazy attitude to have as it's not about the money (otherwise the tanks would have been available for a while and not just to suit XX player who can't put the time in to play clan wars or wasn't playing the game when previous offers were active). They're rare, they're limited, there is no plans to change that because to make them freely available takes away everything that makes them/made then desirable in the first place.