Starik, if someone were to run a full node on windows and try to become a delegate, it would be pointless. As soon as they became a delegate and were active and started missing blocks, they would just get voted out. So what is the point of supporting full nodes for windows? Full nodes aren't meant to be run by the average user. The Lite Wallet can interface with the delegates for anyone on a Windows box, but no one running an application, PoS, or otherwise would be running windows anyways.
Your argument is irrelevant because i never suggested to make a delegate on Windows. 
Correct me if i am wrong.
Lite wallet does not check blockchain or blocks or transactions and does not propagate them through network. It only connects to delegate nodes.
While full wallet does. (as on the most other cryptocurrencies)
If this is true and the network became only 101 delegates then this is very bad because it could be stopped by simple ddos attack.
BTW, will lite wallet run DAPPs?
i'd like to know that as well, will lite wallet have full functions ?
Please see my response above. Full nodes are still available for all popular operation systems. Just the forging part is not available on Windows machines.
Lite Wallets will be able to run Dapps, but not process them. More information will be available in the next weeks.