As a PI administrator I would like to be able to create multiple instances of "PI Analysis Service" windows service for these reasons:
- avoid new potentially problematic analysis from affecting the ones that are operational and working correctly by setting one production instance and one test instance for example.
- every instance could have its own log files and we could move some analyses to a new instance to troubleshoot them
- make possible to distribute the resources usage for asset analytics on more than one server

As a developer, I would like the analysis service to support custom functions that I write using AF SDK.

Allow for Asset Analytics to support event-weighted summary functions (as opposed to time-weighted), such as average and count. This will allow for easily aggregating changes in digital tags, discrete sensor readings (e.g., bucket count), etc. This would allow Asset Analytics to easily perform many of the event-weighted functions of PI Totalizers.

As a a user of Asset Analytics I want to see the calculation dependencies for an analysis so that I can understand which analyses are dependant on an analysis and view potential circular references

As a user, I want to be able to search for specific PI Points used by PI AF attributes, so that I can easily find where the PI Points are being used.

As an administrator, I need to ability to configure the life span of my PI data, so that data are kept or deleted accordingly. For example, data that should be deleted based on corporate mandates and data that should be kept forever are handled accordingly.

Note: This was previously Enhancement 25774OSI8.

As a user configuring a Rollup analysis, I want to be able to apply a filter expression on the inputs so that the Rollup only includes inputs that satisfy a condition.

Note: This was previously Enhancement 114349.

As a user of event frames, I would like the ability to be able to set a time true condition for the end trigger of an event frame analysis, similar to how this functionality is available for the start trigger

Sometime you want to do an analyse only when one or more conditions are true, if the are not true you want to exit the analyse, so steps below the conditional exit are not evaluated/executed. The conditional in Analytics should look like:
 
if condition = true then exit analyse
 
At the moment this is only possible with the function NoOutput(), but then the mapped attribute should be connected to an PIPoint and you have to fill in a else condition. All rows below the conditional exit will not be executed.

As a user, I want to be able to use substitution parameters in attribute template descriptions, so that when elements are created from template, the attribute template description can be substituted with pertinent information.

Note: This was previously Enhancement 116200.

There is a need to create "abstract" element templates in AF, and this has been requested several times.

2012: https://pisquare.osisoft.com/message/4172
2014: https://pisquare.osisoft.com/message/27621#comment-27621
2017: https://pisquare.osisoft.com/thread/32721-possible-to-define-a-virtual-element-template

An abstract class/template is one that you must create a derived version of yourself, you cannot use it directly. It's a base template, but you want to prevent users from instantiating it directly.

You might implement the general attributes for pumps as an abstract template, but you require users to create a derived template for each pump type they have, and then instantiate an element from that.

Managing thousands of notifications can be difficult. There should be an option to export all the notifications and its subscribers. In PI Builder, you can find information about notifications via Contacts and Elements. There should be a direct way to list all the notifications.

As a user, I would like TableLookup Data Reference to be able to use substitution parameters to specify the column name(s) and table name for the SELECT and FROM fields respectively. This would allow for the use of attribute values like those from String Builder attributes to be used to identify the desired column(s) or table and facilitate the use of table lookup within Element Templates.

I would like to use some more advanced string functions such as Split, Len (string length), and even regex filtering to allow more fine grained control of how some input strings (such as attribute values or substitution parameters) are manipulated to create a new string output.

As a user of analyses, I would like to have a Percentile function so that I can filter out atypical events when doing summary calls. The function would look like this: Percentile('attribute', 'timerange', value). This is related to enhancement request WI 44140.

As a quality engineer, I need the ability to calculate Six Sigma SQC statitistics for key quality attirbutes. 

Cp, Cpu, Cpl, Pp, Ppk

Offer a free Community Edition of PI. Limit the point count, but let us geeks monitor our IOT hobbies with PI. This will encourage business buy in and increase general knowledge of OSIsoft throughout the geek community.