Just my 2c...
I'm not so sure ActiveSync support within AquaMail is such a good idea, given Kostya's limited resources (1 man
*, 1 bedroom).
Whilst it's true Outlook.com doesn't yet support IMAP, there are many rumblings that it will. GMail is cutting back on it's ActiveSync usage and most other email providers give both IMAP and POP3 access.
So, that really just leaves corporate providers: When you're in that situation then you're quite probably looking at more than just email - for example calendering is also important (accept meetings etc). Not so sure if AquaMail should dedicate resources to support calendering.
Also, many more corporate environments are beginning to tighten up the requirements for what devices can connect to their Exchange Servers - forcing device encryption for one is becoming higher up the list, as is the ability to remote wipe the device (or at least the mail store). Again not so sure if delving into this level of functionality is perhaps the best use of Kostya's time.
Granted yes there are still many exchange servers that don't force that (for now), but the question I'd ask is how many users out there really want this functionality, as opposed more basic generic functionality that would help out more everyday users? I know that there have been a vocal number of people here on the forums that have +1'd the requirement, but how many AquaMail users really need this when they can be better served I feel with other solutions (e.g. Touchdown - admittedly expensive, but possibly the best Exchange client available for the 'droid [I've not tried Emoze])?
Personally I'd like to see Kostya concentrate his resources on making AquaMail the best darned generic Android email application out there. There are many competitors out there (K9, Kaiten, MailDroid, Enhanced Email) but for me personally AquaMail is already set to outpace them all just concentrating what it's good at.
Like I say, my 2c worth is all.
* I'm assuming from my day's of reading Tolstoy that you were male - please forgive me if I'm wrong!