So, it makes financial sense for me to indulge these requests.However, I need to prioritize my time, as efficiently as possible.

First, I find winter rehabbing in Milwaukee to be much cheaper than rehabbing in the summer -- lots of contractors out of work and not much prospect for retail jobs, so they're willing to work for much less than they are during the nice months (when it's tough to get contractors for less than retail).As for order of rehabbing, during the nice months, we typically work on exterior and interior simultaneously, but prioritize the interior (since that generally takes much longer than the exterior work).

I would love your take on how to prioritize this list balancing the need to not invest too much $$ now, but balancing what will give us an ROI on our improvement.

Owners who prioritize energy efficiency and lack of turnover- sustainability in all senses of the word, have a long view. 2) These upgrades may very well allow you to command higher rent.3) It is landlords with attitudes who care most about collecting money from their tenants who make for the almost universal animosity between tenant and landlord.

Just my 2 cents, but I feel like our culture is big on beating up parents who don't "prioritize" our kids.  

They should strive to provide solutions that are tailored to each customer's unique situation and preferences.Use a customer-centric approach: Agents should adopt a customer-centric approach to their work, meaning that they prioritize the customer's needs and preferences above all else.

Ask tenants to submit repair requests online and PM or yourself check the requests on daily basis and the prioritize and coordinate the repairs.4.  

Good suggestions from @Yvette May, and also I highly recommend prioritizing 2 or 3 landlords back if possible - they may be more honest than a current landlord/mgr.  

Is there an industry standard method of prioritizing?

Since they are paid comission only, they may prioritize accordingly.