For us GW has traded on this successfully, probably down to cautious and minimal new features to the base product. But GW8 seems to have burned up all its credits espesially with 8sp2hp2 which for us was propably the most unreliable version ever. Unfortunately this hasn't gone unnoticed with management.
2. Mobility (RIM, ActiveSync)
This is a must and mobility looks like it could be a great product (its cool now), just needs further development to improve the management interface, reporting and end device comptibility.
3. Active Directory Support / Administration Model
GW doen't need to rely on Active directory support for administration as it doesnt need to have edirectory. Untie it like ZenWorks and I will be happy. I have eDirectory but unfortunately I am only keeping it alive to administer GW. And don't get me started on C1 that has got to go, a nice web front end to administer GW, pop next door and nick the code from the ZenWorks team as they have it nearly perfect.
Ok now stepping beyond the top 3 and into areas of would be nice.
4. Co-Existence (Exchange/GW)
This would be great if there was a way to treat an exchange system as some sort of alien domain/po for booking/viewing calendars.
Search facilities could also do with improvement.