Need Migs back. He's the difference between promotion and relegation.
A bit extreme. Migs can't single-handedly keep Swindon from relegation. But another match fit body in the squad means there is competition for places and that could help a promotion push.
As for a loan player, a midfield general is preferable but anything is better than nothing. If we get another winger it might encourage Howard and Igoe to put in more effort.