Once in a long while I fall into autopilot on a turn and accidentally put full research into something that's just a point or two shy of Max R&D. Maybe a pop-up warning would be good there, a warning similar to the ideas in #166. That is, if you've assigned more teams than you are points shy of Max R&D, you'd be warned, something like:

YOU HAVE ASSIGNED MORE ENGINEERING TEAMS THAN YOU NEED TO COMPLETE THE RESEARCH FOR THIS COMPONENT. ARE YOU SURE?

Of course, the calculation whether to show the alert would have to be adjusted if you're currently in high or weak R&D due to a newscast. (Naturally if you're at +1 R&D and you're 1 point short you wouldn't be warned for assigning 1 team.)