My reason for buying the Pre 3 was mainly price/quality... Getting a good hardware (not the best) with a very nice OS (incomplete and potentially without future but giving me some of the basics I need) for a decent price.
Previous to the Pre 3, I had an Android phone (ZTE Blade) and really liked the OS, and most importantly, the available apps. That said, I paid €150 for that phone 4 months ago, and battery was appalling, wouldn't last more than 5 hours with 3G on and so on...
Therefore, the Pre 3 was a good deal for me (€199) price/quality comparing similar features to existing Android devices in the market (any other better Android phone would have cost me around €300 here in Belgium)
As a bonus, I'm really enjoying WebOS and a really nice hardware, love the physical keyboard, integration of emails and messaging services etc etc... Nonetheless, like many here, after a few days using the phone, I'm sadden by the waist of potential... It's a shame HP was not able to manage it, package it, and distribute it correctly (for the reasons we all well know).
That said, I'd take anything that could improve my current experience with the device. There are a few shortcomings that are fundamentals to me. Basics for smartphones that aren't working properly... Unable to recognise the calling numbers with my Contacts app (HP acknowledged bug on EU Pre 3) , subpar Bing Maps app, crappy Skype sound (EU Pre 3), differences in App Stores (am in Belgium, so no paid apps... only read about the Impostash trick after activating my phone) and OS updates disparity between models and regions etc etc
So, as preferred option, I'd rather have Android apps supported as RIM is doing for its PlayBook, so I can continue enjoying WebOS.
If the above is not possible, or HP is not interested, or any potential future owner of WebOS is not willing to go that way, then, an Android port for the Pre 3 would seem like the best option if available to improve my user experience. it's a trade-off between a "not such a great OS as WebOS" but the wider choice of apps that better utilise the Pre 3.
Obviously, I can use the phone the way it is right now. I'm fairly happy... but I can't get out of the back of my mind the fact that something better can be done with the phone.