DPs ARE animated Gifs, they only loop once. Send a GIF over the protocol and it will show it, but it DOESNT animate.. Yet. I think that either the support hasnt been finished yet or de MSN Object should be changed somehow in order to make it animate.
Animated GIFs are also used for animated emoticons (They work!). If you add one itll show up crap to you, but the other contact sees it animated. Can also easily be done using the protocol, just send a GIF instead of a PNG.
Winks can be exploited -- The code in the Flash files is unprotected, anyone with a bit knowledge can run any actionscripting on your PC as they like. Someone made a patch that disables every P2P crap using memory, but mind you, that also disables DP/s and everything. I suggest you use a Hex Editor and simply change the GUID's of the INVITEs used for transferring Winks (So Messenger will decline them as it does not know what it is).
MSGR7 has a lot of bugs, but overall its a very nice beta. Too bad some stuff hasnt been finished yet. But oh well, can't have everythiing now, can we