What's it take to get a seed these days?

Looks like final competitor list are up now for Corpus since the seeds are already posted. Right off the bat it stands out that the 5.0s are once again getting screwed because of the small draw sizes. Herb Morton & Reggie Black get the only 2 seeds since there are only 7 players, leaving Tim Green and Joe Schornick out in the cold. Based on his history, Tim Green should be the top seed though I know he does not currently have the points. Does anyone know how many seeds the computer spits out per 8 spots in the draw? Based on the 5.0s it is 2. Based on the 4.5 and 4.0 draws it is only 1 per 8. I think tournament directors need to either be willing to add additional seeds based on knowledge of players or perhaps go to masters-cup round robin format for Major Zone draws of 8 or less. 5.0 tournament tennis is doomed to never grow in terms of draw sizes as long as the draws keep working out this way. 4.5 is a bit better as there are 26 guys signed up and thus 4 seeds. Even here I would say the seeds should be extended to at least 6 to catch a couple of other guys that are ranked right around the top 10 and basically one or two spots behind the #4 seed. This way, those guys at least get one of the 1st round byes and perhaps don't have to waste a full day of vacation to get down to Corpus for a Friday morning match. Maybe I am wrong but it seemed to me that in the past, tournament directors had discretion to increase the number of seeds regardless of the draw size. I don't see what is wrong with having 2 seeds for every 8 spots, meaning there should be 8 seeds for the 4.5s and up to 16 seeds for the 4.0s. In the atp, there are 32 seeds in the Grand Slam draws of 128 so 1 for every 4. Even here at River Oaks, there were 8 seeds for a 32 draw. That is the fair ratio if you ask me.