auto-change of source code containing a procedure, function, view, or table name if renamed or moved to another schema.

Exporting resultset not as CSV and so on, but as SQL insert statements, for example, just how phpMyAdmin can

Need integration with version control systems (Bazaar, SVN, GIT). Store and retrieve objects (SP, Func, etc.) and DB schema at all. Diff, history, etc.
Just like in Eclipse, but (file) == (SP, Func and other DB schema objects)

like in M$ Access

With preview of maded changes (ALTER TABLE code);
With copy/paste for columns

As HeidiSQL: http://www.heidisql.com/screenshots.php?which=table_editor

Copy or Move via Drag & Drop of any item to another schema & across connections

Displaying fields of different types in different colors, as example int* - blue, char* - green etc, in data editor and table editor. Maybe in compare tool.

As HeidiSQL: http://www.heidisql.com/screenshots.php?which=grideditors

Add 'Scripts' folder location tab to 'connection' setup dialog and you would get this:

<connection>
......Tables
......Views
......Procedures
......Functions
......Triggers
......Events
......UDFs
......Scripts
......SQL_Scripts

Perhaps even consider ability to enable a auto-maintained 'sql_scripts' table to any schema for unified storage. Browse to SQL_Scripts, right-click to Edit/Run, just like file system level scripts.

Ability to disregard white space in schema comparisons

Data Import improvement

I believe these are more intuitive than the available notations.

We need possibility to draw free any colored lines vith arrows from any diagram point to any other diagram point - small visio line drawing as sample. Without any column linking - only any line drawing.

will be useful for rapid filling of data and study the performance, before it becomes a problem.

http://www.devart.com/forums/viewtopic.php?p=68665

Allow user to choose color for DB, which will shown in editor as background or something. And don't be worry about working with Test DB and Production DB.

Now if i try to execute query if connection was lost (because of timeout, for example) annoying popup "Lost connection to MySQL server during query" appears. I need to close it and restart query.

Very annoying on servers with small timeout.

Suggestion: make at least one connection retry, before show this popup. Maybe make behaviour configurable.

While viewing records in data comparisons, add abilty to view in column side-by-side (as currently available) -OR- by row stacking