BJ Symons-Shorter than ideal … Has good timing on his throws, but will throw into coverage, resulting in costly turnovers … Has a bit of a big circle in his release and drops the ball below his hip at times (should be slow with that motion, but does manage to get the pass off on time) … Good runner, but needs to avoid the defender on the move rather than attempt to run through and break arm tackles … Knee injury (anterior cruciate ligament) needs further medical evaluation.
Dave Ragone-Had 2 starts and was 20/40 for 135yds with 0 TDs and one Int..here are his negatives as per NFL.com
Has a strong, but not great left arm, as he makes his receivers work for the ball rather than letting them run through his throws … Works mostly from the shotgun … Ball-security problems have resulted in a high amount of fumbles (4 fumbles in 2 games)… Forces his passes when under pressure, staring down his primary target too long … While he has adequate arm strength, he needs to throw the ball a little harder, as his passes tend to wobble and is often off-target when throwing on the move or working from underneath the center … Has a higher-than-usual delivery point, which prevents him from getting great speed behind his release … Needs to lead his receivers better, as he tends to aim at their numbers … Underthrows on most of his deep tosses.
Dustin Rykert-Negatives: Has decent quickness off the line, but tends to lunge and overextend, taking him off his feet … Needs to play at a lower pad level, as he tends to get a little too high in his stance, causing him to lose leverage … Has good foot speed, but looks a little slow in his movement working in space … Has marginal change of direction agility (crosses his feet too much).
Ben Sobieski-Negatives: Not that durable, missing two seasons with shoulder problems and hampered another year by groin woes … Last time he started was in 1998 … Makes passive attempts to ride the defender out coming off the snap … Loses contact too frequently as he insists on playing with short arms (keeps arms close to the body, rather than extending them) … Gives up too quickly when engaging defenders if his initial move does not work … Plays too high coming off the snap in pass protection, causing him to struggle with the defender's counter moves … Lacks natural knee bend, appearing too rigid in his stance … Makes no attempt to punish the defender, preferring to take them on with finesse
I applaud the fact that you came up with some names, but clearly even these guys have some issues. My point is that it's not as easy to find upgrades as some people think it is. Most of these guys have little to no experience and the others I looked up have some pretty powerful negatives.