After tests with demo version:
For comfortable work next features required:
1) Tracks must contain notation and sequencer staff ability at once (CC messages recording and editing on notation track). Also,
a function "Show/hide CC data on notation track" will be appreciated.
2) Also, the possibility to delay (and especially negative delay) needed as an option in Rules (for VST instruments with large latency on some patches. for example legato on CSS has 333ms delay. Notion as host application must be able to compensate such things.
3) Customizable hotkeys. User must be able to switch any function by pressing only one key (for example, real-time record. There is a nightmare to start record by pressing 3 keys: 2 keys Cmd+R at once and then additional Space...)