Teams pay a premium for size. Good PGs can be found late in the draft at a higher rate than, say, centers. Or true wings (which act as big point guards). Jenkins will probably not be a more viable option in year one, but in year five? Anything is better than a net 0 (Harris not being re-signed) or negative (when accounting salary if re-signed and on a likely steep decline).the likelihood of a charles jenkins or a reggie jackson or a darius morris being markedly better as a pro than devin harris aren't great. devin's not a top-five PG by any stretch of the imagination, but he's been an all-star and the second best player on an NBA finalist team. jenkins/jackson/morris will be lucky to hit that level.
again, i agree that devin isn't the long-term answer if want to content... but if any of those guys had obvious PG-of-the-future potential, they wouldn't be available at 20.
I am of the opinion that your PG had better be a very special playmaker and/or someone that can spread the floor. Harris isn't special as a playmaker as presently constituted, has never been a shooter, and anything he had will be on it's way out before this team can be taken seriously again.