Seems that i missed something..
I found this comment by Radimus:

The remoteExec acct is SYSTEM, so it has local admin, but doesn't interact with the user at all ...
If you want a method of starting apps or files remotely in the user context, the best bet is to make a client script the starts from STARTUP or HKCU\...\run (runs as current user) that monitors a special folder, where you can remotely push commands / scripts

If I have understood this right it means that the RemoteExe is limited to some local & silent commands... like "net send".

If so, then is it possible to remotely change/create a process on remote client to interact with user/desktop, and then use the remotexe?

Could you explain what/how this means, any sample?
"...that monitors a special folder, where you can remotely push commands / scripts"